Finished version of Emerald Cut Color Change Sapphire

Color Change Sapphire Value, Price, and Jewelry Information

Color change sapphires are those that change color between light sources.

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Color Change 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.

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

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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

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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

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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

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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

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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

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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

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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

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

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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

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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

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Yellow Sapphire - Top Color

Y 3/5; oY 3/5. Very Good 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

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Green Sapphire - Top Color

vslbG 6/3, bG 6/3, G 6/3. Very Good Color

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

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Purple Sapphire - Top Color

RP 6/6, 5/6; rP 6/6; P 6/6. Very Good 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

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Other Sapphires

White Sapphire

Color Change Sapphire

Blue Cabochons

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

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Color change sapphires are those that change color between light sources.

International Gem Society

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Color Change Sapphire Properties

Absorption Spectrum

The ferric iron spectrum dominates these stones. In green and blue-green gems, rich in iron, there are lines at 4710, 4600, and 4500 in the blue-green region. Also lines at 4500 and 4600 may seem to merge and become a broad band. The three bands described are generally known as the 4500 complex and are very distinctive in sapphires. Some blue Sri Lanka sapphires also show a 6935 red fluorescent line, and the 4500 line is very weak in these gems. Synthetic color change sapphires show a line 4740. See main Sapphire gem listing for more information.

Birefringence

0.008-0.009

Birthstone

September

Cleavage

None

Colors

Usually, blue, bluish purple, and violet-purple. More rarely, green, yellow, and pink.

Crystallography

Hexagonal (trigonal). Crystals common, often barrel-shaped, prisms with flat ends, sometimes bipyramidal; also massive, granular, in rolled pebbles.

Dispersion

0.018

Fracture

Conchoidal; frequent parting

Fracture Luster

Vitreous.

Hardness

Luminescence

Natural color change sapphires: inert to strong red in LW, inert to moderate red to orange in SW. Synthetic color change sapphires: moderate orange to red in LW and SW, may fluoresce red in LW and mottled blue in SW.

Luminescence Present

Yes

Luminescence Type

Fluorescent, UV-Long, UV-Short, X-ray Colors

Luster

Vitreous to adamantine.

Optic Sign

Uniaxial -

Optics

RI: o = 1.757-1.770; e = 1.765-1.779 (usually 1.760, 1.768); Uniaxial (-).

Phenomena

Asterism, color change, chatoyancy.

Pleochroism

Very pronounced. See main Sapphire gem listing.

Polish Luster

Vitreous to subadamantine.

Refractive Index

1.757-1.779

Specific Gravity

3.99-4.10; usually near 4.0.

Transparency

Transparent to opaque.

Variety of

Sapphire

Wearability

Excellent

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Color Change Sapphire Value, Price, and Jewelry Information

Start an IGS Membership today

Color Change Sapphire Value

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