Gem Price Guide

Step 6: Appraising

Lesson 3

This is a guide to gem values based upon qualitative evaluations of things like, cut clarity, and color. Those evaluations are inherently subjective, and therefore the values/prices derived from those evaluations are also subjective. Each market participant perceives the cut, clarity, and color of a given gem differently. Realize that buyers and seller often disagree about the quality of a given gemstone, and the price or value of a gem is what one willing buyer and one willing seller can actually agree upon. These values are just a guide. Color descriptions are listed for many gems. If you need help understanding them, see What Does the GIA Colored Gem Grading Code Mean. For a more detailed discussion, see Evaluating Color – hue, tone, and saturation.

The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones. You should keep in mind that gems are sold outside these price ranges every day. 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” gems are often marked up considerably more.

The price your gem will sell for is based upon several factors. Quality is one of the most important factors in valuing a gem. Subtle variations in quality can make a substantial difference in the price, especially of high-end gems. Unless you are familiar with all the subtle nuances of color, cut and clarity you will not be able to accurately judge the value of a gem even with this guide.  You should consider getting an appraisal. Few people have the experience to do this accurately and that includes most jewelers. There are no laws or regulations regarding gem appraisals. Many people write appraisals that do not have the experience to arrive at an accurate value. Still others capitalize on the lack of regulation and purposely write appraisals at highly inflated values. Do not give much merit to an appraisal unless it is from a highly respected organization or a reputable gem dealer who knows market prices and deals in the gem material they are valuing.

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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Celestine Value

Faceted All sizes
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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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

Top Color: oR, R, PR, rP 6/4
Almandine All sizes
to /ct
Fine Color Andradite: G 5/4
Andradite All sizes
to /ct
Chrome Pyrope All sizes
to /ct
Color Change .5 to 1 carat 1 to 6 carats
Africa to /ct to /ct
US to /ct to /ct
Demantoid to 1 carat 1 to 3 carats
to /ct to ,000/ct
Grossular Garnet .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
Fine Color Hessonite: yO 4/5
Hessonite Garnet All sizes
to /ct
Malaya Garnet .5 to 1 carat 1 to 5 carats 5 carats plus
to /ct to /ct to /ct
Mozambique All sizes
to /ct
Mali Garnet All sizes
to /ct
Fine Color Spessartite: O 4/5
Mandarin Orange All sizes
to /ct
Fine Color Pyrope: R 6/5
Pyrope 1 carat plus
/ct
Fine Color Rhodolite: 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
Spessartite Reds See Mandarin above .5 to 3 carats 3 to 6 carats
Little 3 Mine to /ct to /ct
African to /ct to /ct
Darker reds to /ct
Star Garnet All sizes
6 ray star to /ct
4 ray star to /ct
Fine Color Tsavorite: G 6/5
Tsavorite .5 to 1 carat 1 to 2 carats 2 carats plus
Faceted to /ct to /ct to ,000/ct
Uvarovite 10 carats plus
Druzy to /ct
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 .
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 $1.172 million per carat. ($30 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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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
ctsVVSVS/SISI/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 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