Color Change Garnet Value, Price, and Jewelry Information

Fancy Elongated Hexagon Cut Color Change Garnet by Daniel Stair

Color Change Garnet

Color change garnets are mostly pyrope and spessartite in composition. Except for the color change, they are identical in properties to the Malaia variety. Their primary source is Africa.

Color Change Garnet Value

The International Gem Society (IGS) has a list of businesses offering gemstone appraisal services.

Garnet Value via Gem Price Guide

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

Color Change Garnet Information

Data Value
Name Color Change Garnet
Is a Variety of Garnet
Colors Various shades of red, pink, purplish red, reddish orange, red-orange, orange, brownish orange, yellowish orange, greenish, greenish yellow-brown, peach, purple, blue (very rare under artificial light), blueish green, violet. Many possible color change combinations.
Fracture Conchoidal
Hardness 6.5 - 7.5
Cleavage None
Crystallography Isometric.
Refractive Index 1.74-1.78
Birefringence None.
Dispersion 0.022-0.027
Absorption Spectrum Absorption bands are always visible at 4100, 4210, and 4300 that may merge to form a cutoff at 4350. There may also be absorption bands at 4600, 4800, 5040, 5200, and 5370.
Pleochroism None.
Optics Isotropic.
Luster Vitreous.
Polish Luster Vitreous.
Specific Gravity 3.75-4.0
Transparency Transparent to opaque.
Phenomena Color change.
Birthstone January

Any gem that changes color is a rare find and a treat for collectors. Garnets exhibit the widest variety of color changes in the gem world, with almost every hue exhibited.

It is commonly said that garnets come in every color of the rainbow except blue. This is still true in natural light, but there are recent discoveries of garnets that turn blue in artificial light.

Color change garnets are mostly pyrope and spessartite in composition. Except for the color change, they are identical in properties to the Malaia variety. Their primary source is Africa.

Idaho garnets, which are primarily almandine/pyrope mixtures, occasionally show a strong color shift from red to purplish red.

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