Gem Price Guide

Summary
The IGS Gem Price Guide covers commonly traded colored gemstones as well as more unusual, collectible gems. The values listed below are based on a variety of sources, including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers.
Reading time: 4 min
kunzite - gem price guide

Kunzite is the pink variety of the mineral spodumene. Finding a faceted kunzite, like this large, 720-ct gem from Brazil, is unusual, since this material is extremely difficult to cut and wear as a jewelry stone. Photo © Joel E. Arem, PhD, FGA. Used with permission.

How to Use the IGS Gem Price Guide

A faceted gem’s price is based on an evaluation of its physical and optical properties. These are often referred to as the “Four Cs” — color, clarity, cut, and carat. (Here’s a handy introduction to how gemologists grade those properties).

However, despite well-established grading systems for color, clarity, and cut, any evaluation of these properties is inherently subjective. Even gemologists and appraisers may disagree about the quality of a specific stone, so disagreements regarding gem prices do occur.

Ultimately, the price of a gem is what one willing buyer and one willing seller can actually agree upon. Our gem price guide is just that — a guide. Keep in mind that gems are sold outside these price ranges every day. See our article on pricing faceted gems for more information.

Prices listed are retail in US dollars. Wholesale is generally one third of retail. High-end gems are often marked up 30% or less, while low-priced, more “commercial quality” faceted gems are often marked up considerably more.

Unless otherwise noted, all prices listed below are for cut gems, not rough or raw crystal forms, and all weights are in carats.

Click here for more information on gem prices and grading.
emerald - gem price guide

Many factors can influence the price of emerald gems, including their origins. For a more in-depth explanation of these factors, consult our emerald buying guide. 2.02-ct emerald, Zambia. Photo courtesy of liveauctioneers.com and Jasper52.

Appraisals

If you’re not familiar with gem grading or pricing, consider getting an appraisal before buying or selling a gemstone. However, bear in mind that there are no regulations governing who can appraise gems, so carefully review the credentials of prospective appraisers. Choose an appraiser from a well-respected gemological organization or a reputable gem trader with experience dealing in the specific gem you’re interested in.

Gemstone Properties

Color

Many of the gems listed below have color descriptions. Some just have simple color names — red, purple, etc. Others also have codes with abbreviations and numbers, such as “slpR 5/5.” See Spinel, for example. Those codes are gem color grades from the Gemological Institute of America (GIA) color grading system. For a brief explanation of the codes, read this article. Consult our article on gemstone color grading for more information.

amethyst - color grades - gem price guide

This 10.35-ct amethyst has a GIA color grade of vP 5/5. That means a violetish purple hue, a medium tone, and a strong saturation. © RSA Gems. Used with permission.

Clarity

Some of the gems listed below have clarity descriptions such as “clean” or “eye clean.” Other gems have coded clarity grades, such as “VVS” and “SI/I.” See Emerald and Sapphire, for example. For a brief explanation of the GIA clarity codes, read this article. For more detailed information, consult our article on clarity types and grades for colored gemstones.

eye-clean aquamarine - gem price guide

This 6.48-ct aquamarine has an “eye clean” clarity. This means it has no evident clarity flaws visible to the unaided eye. (As a “Type I” gem in the GIA clarity grading system, aquamarines are usually eye clean). © The Gem Trader. Used with permission.

Cut

Colored gemstone cutting can be difficult to evaluate, but its effects will be apparent to your eyes and your wallet. Consult our article on evaluating the cut for more information.

Some of the gem values listed below distinguish between faceted and cabbed stones. Others refer to specific types of faceted gem cuts, such as rounds, ovals, pears, etc. This overview of the lapidary arts will introduce you to the basic types of gem cutting — faceting, cabbing, tumbling, and carving. To learn more about specific faceted cuts, see our articles on fancy gem cuts and cutting styles.

Portuguese-cut Oregon sunstone - gem price guide

This 2.52-ct Oregon sunstone has a classic, round Portuguese cut. © Dan Stair Custom Gemstones. Used with permission.

Carat

One carat equals 0.20 grams. Unlike the other Cs, carats can be objectively measured and confirmed.

Note that some gems have increases in prices per carat at specific weights. Some gems actually see a decrease in price per carat as they get larger. To learn about gem weight and value, check out our article on carats and gem grading.

The IGS Gem Price Guide

You can click on the links below to go directly to the listing for a specific gem.

Actinolite Value

Accompanying value information:
Cut Weight Price
Cat’s Eye 1 carat /ct
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Agate Value

Cabochons All Sizes
Agate $.50 to /ct
Fire Agate to /ct
Blue Chalcedony to /ct
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Alexandrite Value

Top Color: G 5/2 and R or slpR 5/3
Faceted to .5 carat .5 to 1 carat 1 carat plus
Top Red/Green to /ct to /ct to ,000/ct
Medium Red/Green to to /ct to ,000/ct
Slight Red/Green to /ct to /ct
 
Cabochons .3 to 1.5 carat 1.5 carats plus
Strong red/green to /ct to ,000/ct
 
Cat’s Eye All sizes
Strong red/green to /ct
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Allanite Value

All sizes
Faceted to /ct
Cabochons to /ct
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Amber Value

Cabochons All sizes
With insect inclusions - per gram
Plain cabochons - per gram
Prices may be higher for pieces with inclusions of rare insects.
Faceted All sizes
Beads or drops - per gram
Amber is rarely faceted. Please Note: Amber is commonly sold by grams, not carats. 1 gram = 5 carats.
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Amethyst Value

Top Color: P, bP 7/5
Faceted .5 to 1 carat 1 carat plus
Siberian to /ct to /ct
Medium to /ct to /ct
Light to /ct to /ct
 
Cabochons 1 carat plus
Dark to /ct
Medium to /ct
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Ammolite Value

All sizes
Naturals to /ct
Doublets to /ct
Triplets to /ct
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Andalusite Value

Accompanying value information:
Top Color: YG 5/2 and O 5/4
Faceted 1 to 4 carats 4 carats plus
Top color to /ct to ,000/ct
Medium color to /ct to /ct
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Anglesite Value

Accompanying value information:
Faceted 10 carat plus
to /ct
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Apatite Value

Accompanying value information:
Faceted .3 to 1 carat 1 to 3 carats 3 carats plus
“Neon Blue” to /ct to /ct to /ct
Brazil Blue to /ct to /ct to /ct
Blue Cat’s Eye 3 carats plus
to /ct
OTHER COLORS
Faceted All sizes
to /ct
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Apophyllite Value

Accompanying value information:
Faceted 3 to 10 carats
to /ct
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Aquamarine Value

Top Color: GB 4/4
Faceted .5 to 1.5 carats 1.5 to 3 carats 3 carat plus
Dark to /ct to /ct to /ct
Medium to /ct to /ct to /ct
Light to /ct to to /ct
Cabochons All Sizes
Plain to /ct
Cat’s Eye to /ct
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Aragonite Value

Accompanying value information:
Faceted 5 carats plus
to /ct
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Axinite Value

Accompanying value information:
Faceted 1 to 5 carats
to /ct
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Azurite Value

Accompanying value information:
Cabochons All sizes
to /ct
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Barite Value

Accompanying value information:
Faceted 1 carat plus
Yellow to /ct
Colorless to /ct
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Benitoite Value

Accompanying value information:
Faceted .1 to .5 carats .5 to 1 carat 1 carat plus
to /ct to /ct to ,000/ct
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Beryl Value

Accompanying value information:
Red .1 to 1 carat 1 carat plus
to ,000/ct to ,000/ct
Fine Color Morganite: slpR 3/4
Morganite 1 to 10 carats 10 carat plus
to /ct to /ct
Fine Color Yellow: Y 4/4
Gold & Yellow 1 to 10 carats 10 carat plus
to /ct to /ct
Fine Color Green: slyG 4/3
Green 1 to 20 carats 20 carats plus
to /ct to /ct
Goshenite All sizes
to /ct
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Brazilianite Value

Accompanying value information:
Faceted 1 carat plus
to /ct
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Bytownite Value

Accompanying value information:
Faceted 1 to 3 carats
TO /ct
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Calcareous Concretions / Non-Nacreous Pearls Value

Conch Pearls
Accompanying value information:
All sizes
to ,000/ct
Tridacna Pearls
Accompanying value information:
All Sizes
- / ct
Melo Pearls
Accompanying value information:
All Sizes
- / ct
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Calcite Value

Accompanying value information:
Faceted 5 to 100 carats
to /ct
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Celestite Value

Accompanying value information:
Faceted All sizes
to /ct
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Cerussite Value

Accompanying value information:
Faceted 5 carats plus
to /ct
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Chambersite Value

Accompanying value information:
Faceted .10 carats plus
to /ct
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Chrysoberyl Value

Top Color: styG, YG, gY 3/4
Faceted 1 to 7 carats
Color Change to ,000/ct
Fine Green to /ct.
Bright Yellow to /ct
Brownish Yellow to /ct
Cat’s Eye All sizes
/ct to /ct
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Chrysocolla Value

Accompanying value information:
Sillicated All sizes
Solid Color to /ct
Parrot Wing /ct
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Chrysoprase Value

Cabochons All sizes
to /ct
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Cinnabar Value

Accompanying value information:
Cabochons All sizes
to /ct
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Citrine Value

Top Color: O 6/4
Faceted .5 to 1 carat 1 carat plus
Madeira to /ct
Orange to /ct to /ct
Yellow to to /ct
Gold to to /ct
Cabochons .5 to 1 carat 1 carat plus
Yellow to Orange to /ct to /ct
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Colored Diamonds Value

Black Diamonds .6 - .10 carats .10 - .24 carats .25 to .33 carats .35 to .50 carats .51 to .74 carats 1 carat +
– 120/ct - /ct - /ct - /ct - /ct - /ct
Note: these prices are for natural black diamonds. Most black diamonds on the market are treated to color. Their value is in the tens of dollars per carat.
Brown Diamonds .33 to .9 carats 1 to 1.5 carats
VS2 /ct to /ct
SI2 /ct to /ct
I1 to /ct to /ct
Natural Fancy Colors .1 to .99 carats 1 carat plus
Yellow/Brown to /ct
Yellow SI to I1 to /ct
Yellow SI1 to VVS2 to ,000/ct to /ct
Orange SI1 to I1 to /ct
Irridated Fancy Colors .1 to .99 carats 1 carat plus
Yellow SI1 to I1 to /ct to /ct
Green SI1 to /ct to /ct
Blue SI1 to /ct to /ct
Pink SI1 to /ct to /ct
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Coral Value

Cabochons All sizes
Red to /ct
Deep Pink to /ct
Light Pink to /ct
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Crocoite Value

Accompanying value information:
Faceted 5 to 10 carats
to /ct
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Cuprite Value

Accompanying value information:
Faceted 4 carats plus
to /ct
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Danburite Value

Accompanying value information:
Faceted 1 carat plus
Pink to /ct
Colorless to /ct
Other Colors to /ct
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Datolite Value

Accompanying value information:
Faceted .5 to 1 carat 1 carat plus
/ct to /ct
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Diaspore Value

Faceted 1 to 12 carats
to /ct
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Diopside Value

Accompanying value information:
Chrome Diopside 1 to 2 carats 2 carats plus
Faceted to /ct to /ct
Black Star All sizes
to /ct
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Emerald Value

Top origins: Colombian emeralds command premium prices. Recent finds in Ethiopia may also command premium prices. Prices assume colorless clarity enhancement, (no dyes.) Average brilliancy of 40 to 60%. Add up to 20% or deduct to 10% for other cutting. Prices for emerald cuts, round, ovals and pear. Add to 10% for marquis.

Colombian Emeralds

Top Color: vstbG 5/5; bG 5/5 or 6/5; vslbG 5/5
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00-7.99 - - -
8.00+ - - -
Very Good Color: vstbG 6/5; bG 5/5, 4/5 or 6/4; vslbG 5/5, 6/5
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00-7.99 - - -
8.00+ - - -
Good Color: vstbG 4/5, 5/4, 6/4; bG 3/5, 4/4, 5/3, 6/3, 7/4; vslbG 3/5, 4/4, 4/5, 5/3, 6/4; G 4/5, 5/4,5/5, 6/5
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00-7.99 - - -
8.00+ - - -
Fair Color: vstbG 3/5, 4/4, 7/4; bG 3/4, 4/3, 7/3; vslbG 3/4, 6/3, 7/3, 7/4; G 3/5, 4/4, 5/3, 6/4
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00-7.99 - - -
8.00+ - - -

Other Emeralds

Top Color: vstbG 5/5; bG 5/5 or 6/5; vslbG 5/5
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00+ - - -
Very Good Color: vstbG 6/5; bG 5/5, 4/5 or 6/4; vslbG 5/5, 6/5
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00+ - - -
Good Color: vstbG 4/5, 5/4, 6/4; bG 3/5, 4/4, 5/3, 6/3, 7/4; vslbG 3/5, 4/4, 4/5, 5/3, 6/4; G 4/5, 5/4,5/5, 6/5
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00+ - - -
Fair Color: vstbG 3/5, 4/4, 7/4; bG 3/4, 4/3, 7/3; vslbG 3/4, 6/3, 7/3, 7/4; G 3/5, 4/4, 5/3, 6/4
cts VVS VS/SI SI/I
<0.25 - - -
0.25-0.99 - - -
1.00-1.99 - - -
2.00-4.99 - - -
5.00+ - - -
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Enstatite Value

Accompanying value information:
Faceted All sizes
to /ct
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Epidote Value

Accompanying value information:
Faceted All sizes
to /ct
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Fluorite Value

Accompanying value information:
Faceted All sizes
$.50 to /ct
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Garnet Value

Almandine

Top Color: oR, R, PR, rP 6/4
Almandine All sizes
to /ct

Almandine/Pyrope Blend ("Mozambique")

Red-Brown Colors
"Mozambique" All sizes
to /ct

Rhodolite (Almandine/Pyrope Blend)

Fine Color: rP, PR 6/5
Rhodolite .5 to 1 carat 1 to 10 carats 10 carats plus
Faceted to /ct to /ct to /ct
Cabochons to /ct to /ct to /ct

Andradite

Fine Color: G 5/4
Andradite All sizes
to /ct

Demantoid

Demantoid to 1 carat 1 to 3 carats
to /ct to ,000/ct

Grossular

Grossular .5 to 1 carat 1 to 5 carats 5 carats plus
Mint Green (Merelani) to /ct to /ct to /ct
Yellow/Orange to /ct to /ct to /ct
Yellow/Green to /ct to /ct to /ct
Other colors /ct /ct to /ct

Hessonite

Fine Color: yO 4/5
Hessonite Garnet All sizes
to /ct

Tsavorite

Fine Color: G 6/5
Tsavorite .5 to 1 carat 1 to 2 carats 2 carats plus
Faceted to /ct to /ct to ,000/ct

Mali Garnets (Andradite/Grossular Blend)

Mali Garnet All sizes
to /ct

Malaya (Malaia) Garnets

Malaya Garnet .5 to 1 carat 1 to 5 carats 5 carats plus
to /ct to /ct to /ct

Pyrope

Fine Color: R 6/5
Pyrope 1 carat plus
/ct

Chrome Pyrope

Chrome Pyrope All sizes
to /ct

Spessartite

Spessartite Reds .5 to 3 carats 3 to 6 carats
Little 3 Mine to /ct to /ct
African to /ct to /ct
Darker reds to /ct

Mandarin

Fine Color: O 4/5
Mandarin Orange All sizes
to /ct

Uvarovite

Uvarovite 10 carats plus
Druzy to /ct

Star Garnet

Star Garnet All sizes
6 ray star to /ct
4 ray star to /ct

Color Change

Color Change .5 to 1 carat 1 to 6 carats
Africa to /ct to /ct
US to /ct to /ct

Cabochons

Cabochons All Sizes
Common red to purple to /ct
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Gold In Quartz Value

Accompanying value information:
Cabochons All sizes
to /ct.
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Iolite Value

Top Color: slvB 5/4
Faceted Under 1 carat 1 to 3 carats 3 carats plus
to /ct to /ct to /ct
Colorless All sizes
to /ct
Cabochons Under 1 carat 1 carat plus
to /ct to /ct
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Kunzite Value

Faceted 1 to 10 carats 10 carats plus
to /ct to /ct
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Lapis Lazuli Value

Cabochons All sizes
to /ct
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Malachite Value

Accompanying value information:
Cabochons All sizes
to /ct
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Moissanite Value

Faceted .5 to 1 carat over 1 carat
Colorless to /ct to /ct
Green to /ct to /ct
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Moldavite Value

Accompanying value information:
Faceted All sizes
to /ct
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Moonstone Value

Rainbow Moonstone (Peristerite) .5 to .99 carats 1 to 7 carats
Cabochons to /ct to /ct
Labradorite 10 to 30 carats
Cabochons to /ct
White, including cat's eyes All sizes
to /ct
White – Adularescent All sizes
to /ct
Other Colors All sizes
to /ct
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Opal Value

Black Opal, tone N1 to N4

Carat Weight Below commercial Commercial Good Fine Extra fine
1 to 5 - /ct - /ct - ,400/ct ,400 - ,000/ct ,000 - ,000/ct
5 to 10/ct - /ct - /ct - ,400/ct ,400 - ,000/ct ,000 - ,000/ct
10 + - /ct - /ct - ,400/ct ,400 - ,400/ct ,400 - ,000/ct

Dark Opal, tone N5 to N6

Carat Weight Below commercial Commercial Good Fine Extra fine
1 to 5 - /ct - /ct - ,200/ct ,200 - ,000/ct ,000 - ,000/ct
5 to 10/ct - /ct - /ct - ,200/ct ,200 - ,000/ct ,000 - ,000/ct
10 + - /ct - /ct - ,200/ct ,200 - ,600/ct ,600 - ,400/ct

Light Opal, tone N7 to N9

Body Tone Below commercial Commercial Good Fine Extra fine
N7 - /ct - /ct - /ct - ,000/ct ,000 - ,400/ct
N8 - /ct - /ct - /ct - /ct - ,200/ct
N9 - /ct - - /ct - /ct - /ct

Crystal Opal

Carat Weight Below commercial Commercial Good Fine Extra fine
1 to 5 - /ct - /ct - /ct - ,000/ct ,000 - ,000/ct
5 to 10/ct - /ct - /ct - /ct - ,000/ct ,000 - ,400/ct
10 + - /ct - /ct - /ct - ,000/ct ,000 - ,000/ct

Boulder and Matrix Opal

Carat Weight Below commercial Commercial Good Fine Extra fine
1 to 5 - /ct - /ct - /ct - /ct - /ct
5 to 10/ct - /ct - /ct - /ct - /ct - /ct
10 to 15 - /ct - ,20/ct - /ct - /ct - /ct
15 + - /ct - /ct - /ct - /ct - /ct

Composite Opals

Doublets prices are usually 15% to 35% of the value of similar looking natural, (solid,) gem. However, they occasionally run as high as 50% of a natural opal if they are of exceptional quality. Triplets are only about 1% of the value of an equivalent natural and peak at .

Other Opal Types

Contra Luz All sizes
to /ct
Fire Opals, faceted .4 to 1 carat 1 to 5 carats 5 carats plus
to /ct to /ct to /ct
Fire Opals, Cabochons .4 to 2 carats 2 to 10 carats
Solid to /ct to /ct
In Matrix to /ct
Pink Opal All sizes
/ct
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Oregon Sunstone Value

Schiller

  • Color Intensity: Light, medium, deep
  • Color Range: Clear, gold, peach, coral, orange, red, green
  • Transparency: Translucent to Opaque
The price range is consistently between - per carat regardless of size or color.

Clear Hues

  • Color Intensity: Light
  • Color Range: Clear, gold, peach, coral, pink, red, green, blue
  • Transparency: Transparent
Price Per Carat Clear Peach Pink Light Blue Green
Up to 2.5 cts
2.5-5 cts
5-7 cts
7 cts

Mid-Deep Tones

  • Color Intensity: Medium to deep
  • Color Range: Strong Peach, orange, red, green, blue
  • Transparency: Transparent
Price Per Carat Med Red Orange Red Blue Green
Up to 2.5 cts
2.5-5 cts
5-7 cts
7 cts

Constellation, AKA Aventurescent

  • Color Intensity: Medium to deep
  • Color Range: Strong peach, orange, red, green, blue
  • Transparency: Transparent
Price Per Carat Mid to Deep Color Constellation
Up to 2.5 cts
2.5-5 cts
5-7 cts
7 cts

Two Tone (Dichroic)

  • Color Intensity: Medium to deep
  • Color Range: Strong peach, orange, red, green, blue
  • Transparency: Transparent
Price Per Carat Light Dichroic Med Dichroic Deep Dichroic
Up to 2.5 cts
2.5-5 cts
5-7 cts
7 cts

Classic Sunstone

  • Color Intensity: Combination of light-medium or light-deep
  • Color Range: Gold, peach, coral, pink, red, green, blue
  • Transparency: Transparent
Note: There was a limited sampling of larger sized stones, which may affect pricing accuracy.
Price Per Carat Light Classic Pink/Peach Classic Mid to Deep Red Classic Blue/Green
Up to 2.5 cts
2.5-5 cts
5-7 cts
7 cts

Mystique

  • Color Intensity: Light, medium, deep
  • Color Range: Gold, peach, coral, pink, red, green, blue
  • Transparency: Transparent
Price Per Carat Med-Deep Mystique
Up to 2.5 cts
2.5-5 cts ,226.00
5-7 cts
7 cts
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Pearls

Prices of pearls are based on several quality factors. The values provided in this guide are for round cultured pearls. Baroque pearls are about 25-35% the cost of round pearls. Natural pearls are extremely rare, and largely limited to auction and collector’s markets. These can be worth 10 to 20 times an equivalent Akoya cultured pearl.

Akoya Pearls with White Body Color

Accompanying value information:

Matching Pair

Size (mm) Top Luster High Luster
6 - 6.5 - -
6.5 - 7 - -
7 - 7.5 - -
7.5 - 8 - -
8 - 8.5 - -
8.5 - 9 - -
9 - 9.5 - -

Single Pearl

Size (mm) Top Luster High Luster
6 - 6.5 - -
6.5 - 7 - -
7 - 7.50 - -
7.5 - 8 - -
8 - 8.5 - -
8.5 - 9 - -
9 - 9.5 - -

Freshwater Pearls with White Body Color

Matching Pair

Size (mm) Top Luster High Luster
6 - 7 - -
7 - 8 - -
8 - 9 - -
9 - 10 - -
10 - 11 - -

Single Pearl

Size (mm) Top Luster High Luster
6 - 7 - -
7 - 8 - -
8 - 9 - -
9 - 10 - -
10 - 11 - -

South Sea Pearls

Accompanying value information:

Matching Pair

Size (mm) High Luster, White High Luster, Golden
8 - 9 - -
9 - 10 - -
10 - 11 - -
11 - 12 - -
12 - 13 - -
13 - 14 - -

Single Pearl

Size (mm) High Luster, White High Luster, Golden
8 - 9 - -
9 - 10 - -
10 - 11 - -
11 - 12 - -
12 - 13 - -
13 - 14 - -

Tahitian Pearls with Black Body Color

Accompanying value information:

Matching Pair

Size (mm) Top Luster High Luster
8 - 9 - -
9 - 10 - -
10 - 11 - -
11 - 12 - -
12 - 13 - -

Single Pearl

Size (mm) Top Luster High Luster
8 - 9 - -
9 - 10 - -
10 - 11 - -
11 - 12 - -
12 - 13 - -
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Peridot Value

Top Color: yG 5/4
Faceted .5 to 1 carat 1 to 3 carats 3 carats plus
Eye Clean to /ct to /ct to /ct
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Phenakite Value

Accompanying value information:
Faceted All sizes
to /ct
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Quartz Value

Smoky Quartz All sizes
Faceted to /ct
Rose Quartz All sizes
Faceted to /ct
Rutilated & Tourmalinated Quartz All sizes
Faceted to /ct
Cabochons /ct
Quartz with Lepidocrite All sizes
Faceted or cabochon to /ct
Star Quartz All sizes
to /ct
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Rhodochrosite Value

Accompanying value information:
Faceted All sizes
Colorado to /ct
African to /ct
Cabochons All sizes
Bulls eye to /ct
Plain to /ct
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Ruby Value

Burma Ruby - Unheated

Origin and lack of treatment should be certified. Prices for oval and cushion cuts. Add up to 20% or deduct to 10% for other cutting. Add 7% to 10% for rounds, pears, marquis. Add 15% to30% for emerald cuts.
Top Color: R 6/6
No trade data available. As of May 2015, the record price for a ruby is approximately 2 million per carat. ( million for a 25.59 carat Mogok "pigeon's blood" ruby).
Very Good Color: R 5/6, 7/5; slpR 5/6, 6/6, 7/5; stpR 6/6
cts VVS VS/SI SI/I
0.50-0.99 - /ct - /ct - /ct
1.00-1.99 - /ct - /ct - /ct
2.00-2.99 - /ct - /ct - /ct
3.00-4.99 - /ct - /ct - /ct
5.00+ - /ct - /ct - /ct
Good Color: R 6/5; slpR 6/5; stpR 5/6
cts VVS VS/SI SI/I
0.50-0.99 - /ct - /ct - /ct
1.00-1.99 - /ct - /ct - /ct
2.00-2.99 - /ct - /ct - /ct
3.00-4.99 - /ct - /ct - /ct
5.00+ - /ct - /ct - /ct
Fair Color: R 5/5, 6/4, 7/4; slpR 5/5, 6/4, 7/4
cts VVS VS/SI SI/I
0.50-0.99 - /ct - /ct - /ct
1.00-1.99 - /ct - /ct - /ct
2.00-2.99 - /ct - /ct - /ct
3.00-4.99 - /ct - /ct - /ct
5.00+ - /ct - /ct - /ct

Ruby - Heat Treated

Prices for oval and cushion cuts. Add up to 20% or deduct to 10% for other cutting. Add 7% to 10% for rounds, pears, marquis. Add 15% to30% for emerald cuts.
Top Color: R 6/6
No trade data available.
Very Good Color: R 5/6, 7/5; slpR 5/6, 6/6, 7/5; stpR 6/6
cts VVS VS/SI SI/I
0.50-0.99 - /ct - /ct - /ct
1.00-1.99 - /ct - /ct - /ct
2.00-2.99 - /ct - /ct - /ct
3.00-4.99 - /ct - /ct - /ct
5.00+ - /ct - /ct - /ct
Good Color: R 6/5; slpR 6/5; stpR 5/6
cts VVS VS/SI SI/I
0.50-0.99 - /ct - /ct - /ct
1.00-1.99 - /ct - /ct - /ct
2.00-2.99 - /ct - /ct - /ct
3.00-4.99 - /ct - /ct - /ct
5.00+ - /ct - /ct - /ct
Fair Color: R 5/5, 6/4, 7/4; slpR 5/5, 6/4, 7/4
cts VVS VS/SI SI/I
0.50-0.99 - /ct - /ct - /ct
1.00-1.99 - /ct - /ct - /ct
2.00-2.99 - /ct - /ct - /ct
3.00-4.99 - /ct - /ct - /ct
5.00+ - /ct - /ct - /ct

Additional Ruby Shapes and Types

Cabochons .5 to 1 carat over 3 carats
to /ct to /ct
Star Ruby .5 to 1 carat Over 1 carat
Near top color to /ct to /ct
Indian Rubies All sizes
to .ct
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Sapphire Value

Kashmir Sapphire

Certified origin. Untreated material. Average brilliancy of 40 to 60%. Add to 20% or deduct to 10% for other cutting. Prices for ovals and cushions. Add 8% to 10% for rounds and pears. Add 10% to 20% for emeralds and marquis.
Top Grade: vB 5/6, 6/6. B 5/6, 6/6.
Top Grade 1 to 2 carats 2 to 3 carats 3 to 4 carats 4 carats plus
VVS ,000 to ,650/ct ,000 to ,000/ct ,000 to ,500/ct to ,000/ct
VS/SI ,000 to ,000/ct ,000 to ,700/ct ,000 to ,000/ct to ,000/ct
SI/I ,000 to ,000/ct ,000 to 24,600/ct ,000 to 27,600/ct to ,000/ct
Very Good Grade: V 4/6, 5/6, 6/5. bV 5/6, 6/6; vB 5/5, 4/6, 6/5.
Very Good Grade 1 to 2 carats 2 to 3 carats 3 to 4 carats 4 carats plus
VVS ,000 to ,300/ct ,600 to ,400/ct ,000 to ,000/ct to ,000/ct
VS/SI to ,100/ct ,000 to ,700/ct ,000 to ,000/ct to ,500/ct
SI/I to ,300/ct ,000 to ,000/ct ,400 to ,600/ct to ,500/ct
Good Grade: V 4/5, 5/4, 5/5, 6/4, 6/5, 7/5; bV 4/5, 4/6, 5/4, 5/5, 5/4, 4/5; vB 3/5, 4/4, 6/3, 7/5, 5/4, 4/5; B 3/5, 4/4, 6/3, 7/5, 6/4, 5/4, 4/5.
Good Grade 1 to 2 carats 2 to 3 carats 3 to 4 carats 4 carats plus
VVS to ,200/ct to ,700/ct ,000 to ,000/ct to ,000/ct
VS/SI to /ct to ,200/ct ,000 to ,000/ct to ,000/ct
SI/I to /ct to ,500/ct ,000 to ,000/ct to ,900/ct
Fair Grade: V 3/4, 3/5, 4/4, 4/3, 5/3, 6/3, 7/4; bV 3/5, 4/4, 5/3, 6/3, 7/4, 7/5; vB 3/4, 4/3, 7/4, 6/2, 5/3; B 3/4, 4/3, 7/4 6/2, 5/2, 5/3.
Fair Grade 1 to 2 carats 2 to 3 carats 3 to 4 carats 4 carats plus
VVS to /ct to ,200/ct to ,500/ct to ,500/ct
VS/SI to /ct to /ct to ,000/ct to ,000/ct
SI/I to /ct to /ct to ,500/ct to ,700/ct

Other Blue Sapphires

Heat treated material. Average brilliancy of 40% to 60%. Add to 20% or deduct to 10% for other cutting. Prices for ovals and cushions. Add 8% to 10% for rounds and pears. Add 10% to 20% for emeralds and marquis. Note: If certified Burmese and untreated, add 50%, except fair or lower grades. Typically, mid-quality untreated blue sapphire will sell for 20-30% more than a treated stone of the same quality. Top-quality unheated stones could get a premium of 50% or higher, especially if they're large.
Top Grade: vB 5/6, 6/6; B 5/6, 6/6.
Top Grade 1 to 2 carats 2 to 3 carats 3 to 4 carats 4 carats plus
VVS to /ct to /ct to /ct to ,500/ct
VS/SI to /ct to /ct to /ct /ct
SI/I to /ct to /ct to /ct /ct
Very Good Grade: V 4/6, 5/5, 6/6; bV 5/6, 6/7; vB 5/5, 4/6, 6/5; B 4/6, 5/5, 6/5; vslgB 4/6, 5/6, 6/6.
Very Good Grade .5 to .75 carat .75 to 1 carat 1 to 2 carats 2 carats plus
VVS to /ct to /ct to /ct to /ct
VS/SI to /ct to /ct to /ct to /ct
SI/I to /ct to /ct to /ct to /ct
Good Grade: V 4/5, 5/4, 5/5, 6/4, 6/5, 7/5; bV 4/5, 4/6, 5/4, 5/5, 6/4, 6/5; vB 3/5, 4/4, 6/3, 7/5, 5/4, 4/5; B 3/5, 4/4, 6/3, 7/5, 6/4, 6/4, 5/4, 4/5; vslgB 7/5, 5/4, 6/4, 4/5, 6/5, 5/5; gB 4/5, 5/5, 6/5.
Good Grade .5 to .75 carat .75 to 1 carat 1 to 2 carats 2 carats plus
VVS to /ct to /ct to /ct to /ct
VS/SI to /ct to /ct to /ct to /ct
SI/I to /ct to /ct to /ct to /ct
Fair Grade: V 3/4, 3/5, 4/3, 4/4, 5/3, 6/3, 7/4; bV 3/5, 4/4, 5/3, 6/3, 7/4, 7/5; vB 3/4, 4/3, 6/2, 7/4, 5/3; B 3/4, 4/3, 7/4, 6/2, 5/2, 5/3; vslgB 3/4, 3/5, 4/3, 4/4, 5/3, 6/3, 7/4; gB 3/5, 4/4, 5/3, 5/4, 6/3, 6/4, 7/4; vstgB 4/4, 5/4, 6/4.
Fair Grade .5 to .75 carat .75 to 1 carat 1 to 2 carats 2 carats plus
VVS to /ct to /ct to /ct to /ct
VS/SI to /ct to /ct to /ct to /ct
SI/I to /ct to /ct to /ct to /ct

Fancy Sapphires

Average brilliancy of 30% to 40%. Add to 20% or deduct to 10% for other cutting. Prices for ovals and cushions. Add 7% to 10% for rounds, pears and marquis. Add 15% to 30% for emerald cuts.

Pink Sapphire

Top Color: stpR 3/6, 4/6; RP 4/6; rP 4/6
No trade data available
Very Good Color: slpR 4/6; stpR 4/5; RP 3/5, 4/4, 4/5; rP 3/5, 4/4, 4/5; P 4/5.
Very Good Color .5 to .75 carat .75 to 1 carat 1 to 2 carats 2 carats plus
VVS to /ct to /ct to /ct to ,500/ct
VS/SI to /ct to /ct to /ct to /ct
SI/I to /ct to /ct to /ct to /ct
Good Color: slpR 3/5, 4/4, 4/5; stpR 3/4, 3/5, 4/4; RP 3/4, 4/3; rP 3/4, 4/3; P 3/4, 4/4.
Good Color .5 to .75 carat .75 to 1 carat 1 to 2 carats 2 carats plus
VVS to /ct to /ct to /ct to /ct
VS/SI to /ct to /ct to /ct to /ct
SI/I to /ct to /ct to /ct to /ct
Fair Color: slpR 3/3, 4/3; stpR 3/4, 4/3; RP 2/3, 3/3; rP 2/3, 3/3; P 3/, 4/3.
Fair Color .75 to 1 carat 1 to 2 carats 2 carats plus
VVS to /ct to /ct to /ct
VS/SI to /ct to /ct to /ct
SI/I to /ct to /ct to /ct

Yellow Sapphire

Top Color: Y 3/5; oY 3/5. Very Good Color: Y 3/4; oY 3/4. Good Color: Y 3/3, 4/4; oY 3/3, 4/4. Fair Color: Y 2/3, 4/3; oY 2/3, 4/3.
Yellow Sapphire to 2 carats 2 carats plus
Top Color to /ct to /ct
Very Good Color to /ct to /ct
Good Color to /ct to /ct
Fair Color to /ct to /ct

Green Sapphire

Top Color: vslbG 6/3, bG 6/3, G 6/3. Very Good Color: BG 6/3, vstbG 6/2, 5/3, 6/2; bG 4/3, 5/3, 6/3; vslbG 4/3, 5/3, 6/2; G 5/3, 7/3; slyG 5/3, 6/3; yG 6/3. Good Color: BG 4/3, 5/3, 6/2; vstbG 4/3, 5/3, 7/3; bG 4/2, 5/2, 7/3, G 5/2,6/2; slyG 5/2, 6/2, 7/3; yG 5/3, 6/2, 7/3; styG 5/3, 6/3; styG 5/3, 6/3. Fair Color: BG 4/2, 5/2; vstbG 4/2, 7/2; bG 3/2, 7/2; vslbG 7/2; G 4/2, 7/2; slyG 4/2, 7/2; yG 5/2, 7/3; styG 5/2, 6/2.
Green Sapphire to 1 carat 1 carat plus
Top Color to /ct to /ct
Very Good Color to /ct to /ct
Good Color to /ct to /ct
Fair Color to /ct to /ct

Purple Sapphire

Top Color: RP 6/6, 5/6; rP 6/6; P 6/6. Very Good Color: stpR 5/5, 6/5; RP 5/5, 6/5, 7/5; rP 5/6, 6/5; P 5/6, 6/5; bP 5/6, 6/5. Good Color: slpR 5/3, 6/3; stpR 5/4, 6/4, 7/4; RP 5/4, 6/3, 6/4, 7/4; rP 5/4, 5/5, 6/4, 7/5; P 5/4, 5/5, 6/4, 7/5; bP 4/5, 4/6, 5/5. Fair Color: .
Purple Sapphire to 2 carats 2 carats plus
Top Color to /ct to /ct
Very Good Color to /ct to /ct
Good Color to /ct to /ct
Fair Color to /ct to /ct

Other Sapphires

White Sapphire .5 to 3 carats 3 to 5 carats 5 to 15 carats
to /ct to /ct to /ct
Color Change Sapphire .5 to 1 carat 1 to 7 carats
to /ct to /ct
Blue Cabochons .5 to 1 carat 1 to 7 carats
to /ct to /ct
Star Sapphire .5 to 1 carat 1 to 5 carats
Blue to /ct to /ct
Fancy Colors to /ct to /ct
Black to /ct to /ct
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Sapphirine Value

Accompanying value information:
Faceted .5 to 1 carat 1 to 5 carats
to /ct to /ct
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Scapolite Value

Accompanying value information:
Gold 1 to 3 carats 3 carats plus
Faceted to /ct to /ct
Purple .5 to 1 carat 1 carat plus
Faceted to /ct to /ct
Colorless 1 to 10 carats 10 carats plus
Faceted to /ct to /ct
Cat’s Eye 1 to 10 carats
to /ct
Star 1 carat plus
to /ct
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Sphalerite Value

Faceted 1 carat plus
to /ct
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Spinel Value

Fine Color Blue: B 5/5
Blue .5 to 2 carats 2 to 4 carats 4 carats plus
Faceted to /ct to /ct to /ct
Fine Color Red: R, slpR 5/5
Red .2 to 1 carat 1 to 5 carats
Faceted to /ct to ,000/ct
Pink .5 to 1 carats 1 to 3 carats 3 carats plus
Faceted to /ct to ,000/ct to
Fine Color Purple: P 5/5: P, rP, bP, V 5/4
Purple .5 to 1 carats 1 to 3 carats 3 carats plus
Faceted to /ct to ,800/ct to ,000/ct
Fine Color Orange: O, rO 5/5
Other Colors .5 to 1 carats 1 to 5 carats 5 carats plus
Faceted to /ct to /ct to ,000/ct
Star Spinel All sizes
to /ct
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Sugilite Value

Accompanying value information:
Faceted All sizes
to /ct
Cabochons All sizes
to /ct
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Sunstone Value

Accompanying value information:
Red, Green & Bicolored .10 to .99 carats 1 to 100 carats
SI to clean to /ct to /ct
Peach .5 to 20 carats
SI to clean to /ct.
Schiller 1 carat plus
SI to clean to /ct
Yellow 1 carat plus
SI to clean to /ct
Cabochons All sizes
Red to /ct
Schiller to /ct
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Tanzanite Value

Top Color: vB 6/5
Faceted .5 to 1 carat 1 to 3 carats 5 carats plus
SI to Clean to /ct to /ct to /ct
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Titanite Value

Faceted .5 to 1 carats 1 to 10 carats 10 to 20 carats
to /ct to /ct to /ct
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Topaz Value

Top Color: oR, R 5/5
Imperial .5 to 1 carat 1 to 3 carats 3 carats plus
- /ct to /ct to /ct
Pink .5 to 3 carat 3 carats plus
to /ct to /ct
Top Color: vslgB, gB 5/5
Blues & Colorless .5 to 1 carat 1 carat plus
London Blue to to /ct
Swiss Blue to /ct to /ct
Sky Blue to /ct to /ct
Colorless to /ct to /ct
Other Colors All sizes
Faceted to /ct
Cabochons All sizes
Blue to /ct
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Tourmaline Value

Brazilian Cuprian (Paraíba) Tourmaline

Carat Weight Low Average Good Great Superb
0.20-0.99 -,000 / ct ,000-,000 / ct ,850-,000 / ct ,000-,000 / ct ,000-,500 / ct
1.00-1.99 -,000 / ct ,000-,500 / ct ,000-,000 / ct ,000-,000 / ct ,000-,000 / ct
2.00-2.99 -,000 / ct ,500-,500 / ct ,000-,000 / ct ,000-,000 / ct ,000+ / ct
3.00-4.99 ,100-,500 / ct ,000-,000 / ct ,000-,000 / ct ,000-,000 / ct ,000+ / ct
5.00+ ,000+ / ct ,000+ / ct ,000+ / ct ,000+ / ct ,000+ / ct

African Cuprian (Paraíba) Tourmaline

Carat Weight Low Average Good Great Superb
0.20-0.99 -,000 / ct -,700 / ct ,700-,500 / ct ,000-,000 / ct ,000-,500 / ct
1.00-2.99 -,450 / ct ,400-,500 / ct ,900-,000 / ct ,500-,000 / ct ,000-,000 / ct
3.00-4.99 -,800 / ct ,550-,000 / ct ,000-,500 / ct ,000-,000 / ct ,000-,000 / ct
5.00-9.99 -,500 / ct ,000-,500 / ct ,500-,000 / ct ,000-,500 / ct ,000-,000 / ct
10.00+ -,000 / ct ,000-,500 / ct ,500-,000 / ct ,500-,500 / ct ,000-,000 / ct

Fine Color Blue: B 5/4

Indicolite .4 to 2 carats 2 to 10 plus carats
Faceted to /ct to /ct
Cabochons to /ct

Fine Color Red: R, slpR 6/5

Rubellite .5 to 1 carat 1 to 5 carats 5 carats plus
Reds to /ct to /ct to /ct
Pinks to /ct to /ct to /ct

Fine Color Green: vstbG, BG, vslbG 5/4

Chrome .5 to 1 carat 1 to 5 carats
to /ct to /ct
Other greens .5 to 2 carats 2 to 5 carats 5 carats plus
to /ct to /ct to /ct

Other Tourmaline Types

Other Faceted Tourmaline .5 to 1 carat 1 to 5 carats 5 plus carats
Fancy Colors: - Yellow - Orange (Top Color Orange: O 4/5) - Purple to /ct to /ct to /ct
Watermelon to to /ct to /ct
Other Multicolor to to /ct to /ct
Cat’s Eye .5 to 1 carat 1 to 5 carats 5 plus carats
to /ct to /ct to /ct
Other Cabochons 1 to 5 carats 5 plus carats
All colors to /ct to /ct
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Turquoise Value

Cabochons All Sizes
to /ct
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Wulfenite Value

Accompanying value information:
Faceted .5 to 1.5 carat
to /ct
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Zircon Value

Fine Color Red: oR 5/4
Red 1 to 5 carats
to /ct
Fine Color Blue: vstgB 5/4
Blue 1 to 5 carats 5 carats plus
to /ct to /ct
Fine Color Green: slyG 5/3
Green 1 to 5 carats 5 carats plus
to /ct to /ct
Fine Color Yellow to Orange: rO 4/4
Yellow to Orange .5 to 1 carat 1 to 20 carats
Sold as "Gold" /ct to /ct
Other Colors 1 carat plus
to /ct
Cat’s Eye All sizes
Blue /ct
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International Gem Society