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Natural Gemstones: Reference Facts

Color-Change Garnet

Color-change garnet is one of the very rare and most fascinating gemstones. This garnet changes color like an alexandrite. The color change can be strong and dramatic like the color change of top quality alexandrite.

The rarest of color-change garnet is Blue Color-Change Garnet which was first discovered in 1990s in Bekily, Madagascar. Until this color change garnet was discovered, there never were any blue garnets. In its finest qualities, this gem changes color from purple in incandescent light to green-gray-blue in the daylight. The blue color of this garnet is typically teal blue or steely blue.

There are only a few gemstones that can exhibit a color change phenomenon. The color-change gemstones are extraordinarily rare, and the rarity increases dramatically above one carat. Despite the worldwide economic slowdown, color change garnet is rising in price. This is a stone to collect either you are gemstone lovers or collectors.

Color-Change Garnet Known Facts
Color Incandescent – Pink, Purple, Purplish Pink, Purplish Red, Red; Fluorescent - Lavender, Blue, Bluish Green, Green, Brown, Gray
Clarity No clarity type classification. Moderate inclusions may be present.
Crystal Structure Cubic
Chemical Composition Combination of Pyrope-Spessartite
Luster Vitreous
Optic Character Singly Refractive
Durability Very Good
Specific Gravity(SG) 3.8+
Refractive Index(RI) 1.76
Birefringence -
Hardness 7-7.5
Occurrence Madagascar, Tanzania, Sri Lanka



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