Star Sapphire Value, Price, and Jewelry Information

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Star Sapphire Value

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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.

Kashmir Sapphire - Top Grade: vB 5/6, 6/6. B 5/6, 6/6.

1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 to 3 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
3 to 4 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
4 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Kashmir Sapphire - Very Good Grade: V 4/6, 5/6, 6/5. bV 5/6, 6/6; vB 5/5, 4/6, 6/5.

1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 to 3 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
3 to 4 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
4 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Kashmir Sapphire - 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.

1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 to 3 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
3 to 4 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
4 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /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.

Other Blue Sapphires - Top Grade: vB 5/6, 6/6; B 5/6, 6/6.

1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 to 3 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
3 to 4 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
4 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Other Blue Sapphires - 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.

.5 to .75 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
.75 to 1 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Other Blue Sapphires - 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.

.5 to .75 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
.75 to 1 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Other Blue Sapphires - 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.

.5 to .75 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
.75 to 1 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
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

Not enough trade data available.

Pink Sapphire - 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.

.5 to .75 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
.75 to 1 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Pink Pink Sapphire - 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.

.5 to .75 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
.75 to 1 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct

Pink Sapphire - 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.

.75 to 1 carat
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
1 to 2 carats
VVS
to /ct
VS/SI
to /ct
SI/I
to /ct
2 carats plus
VVS
to /ct
VS/SI
to /ct
SI/I
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.

to 2 carats
Top Color
to /ct
Very Good Color
to /ct
Good Color
to /ct
Fair Color
to /ct
2 carats plus
Top Color
to /ct
Very Good Color
to /ct
Good Color
to /ct
Fair Color
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.

to 1 carat
Top Color
to /ct
Very Good Color
to /ct
Good Color
to /ct
Fair Color
to /ct
1 carat plus
Top Color
to /ct
Very Good Color
to /ct
Good Color
to /ct
Fair Color
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: .

to 2 carats
Top Color
to /ct
Very Good Color
to /ct
Good Color
to /ct
Fair Color
to /ct
2 carats plus
Top Color
to /ct
Very Good Color
to /ct
Good Color
to /ct
Fair Color
to /ct

Other Sapphires

White Sapphire

.5 to 3 carats
White Sapphire
to /ct
3 to 5 carats
White Sapphire
to /ct
5 to 15 carats
White Sapphire
to /ct

Color Change Sapphire

.5 to 1 carat
Color Change Sapphire
to /ct
1 to 7 carats
Color Change Sapphire
to /ct

Blue Cabochons

.5 to 1 carat
Blue Cabochons
to /ct
1 to 7 carats
Blue Cabochons
to /ct

Star Sapphire

.5 to 1 carat
Blue
to /ct
Fancy Colors
to /ct
Black
to /ct
1 to 5 carats
Blue
to /ct
Fancy Colors
to /ct
Black
to /ct
View Color Change Sapphire Profile

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See our article called Phenomenal Gems to read more about the grading and valuation of stones with asterism.

Star Sapphire Information

Data Value
Name Star Sapphire
Is a Variety of Sapphire
Colors All except red.
Fracture Conchoidal, Frequent parting
Hardness 9
Cleavage None
Wearability Excellent
Crystallography Hexagonal (trigonal).
Refractive Index 1.757-1.779
Birefringence 0.008-0.009
Dispersion 0.018
Luminescence See "Identifying Characteristics" under the Sapphire main gem listing.
Luminescence Present Yes
Luminescence Type Fluorescent, UV-Long, UV-Short, X-ray Colors
Absorption Spectrum See "Identifying Characteristics" under the Sapphire main gem listing.
Pleochroism Very pronounced.
  • Blue sapphire: intense violet-blue/blue-green
  • Green sapphire: intense green / yellow-green
  • Orange sapphire: yellow-brown or orange/colorless
  • Yellow sapphire: medium yellow / pale yellow
  • Purple sapphire: violet/orange
  • Brownish-orange sapphire: brownish-orange / greenish
  • Padparadscha sapphire: orange-yellow / yellowish-orange
Optics RI: o = 1.757-1.770; e = 1.765-1.779 (usually 1.760, 1.768); Uniaxial (-).
Optic Sign Uniaxial -
Luster Vitreous to adamantine.
Polish Luster Vitreous to subadamantine.
Fracture Luster Vitreous.
Specific Gravity 3.99-4.10; usually near 4.0
Enhancements Heat treated: common. Diffusion treatment (places a thin blue coating on colorless sapphire): occasional. Irradiation (turns colorless gems yellow, orange, or light blue.): rare.
Typical Treatments Heat Treatment, Irradiation, Lattice Diffusion
Transparency Transparent to opaque.
Phenomena Asterism.
Birthstone September

Star Sapphire is a type of sapphire displaying an optical star-like effect. This effect is caused by asterism. You can read more about asterism in our Phenomenal Gems article.

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