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 Home / Gem Library / Natural Gemstones / Diaspore August 20, 2019  

Natural Diaspore
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There are 1 Diaspore(s) available at

Diaspore has been available since the early 1800’s and is mentioned in George Kunz’s book “The Curious Lore of Precious Stone” where the stone is linked to the Christian name Dorothy.

Known Facts
Color Key: gray, khaki green, pink, light purple
Refractive Index: 1.70 – 1.75
Chemical Composition: AlO(OH)
Hardness: 6.5 - 7.0
Density: 3.30 – 3.39
Crystal Group: Orthorhombic

Along with, alexandrite, color change garnet, and color change sapphire, diaspore is one of the few gemstones that may change color as a function of the lighting conditions. The gem is currently mined at only one location in the world, Anatolia, Turkey and supply is said to be very limited.

Although the color change is normally not very strong, Diaspore can shift from a kiwi green or gray in daylight to a rhodolite purplish-pink under incandescent light. but normally the color. Mostly recently the trade name “Zultanite” has been adopted for this stone.

Diaspore (Zultanite) is believed to help improve ambition, intellect and is said to help one develop psychic powers.

Check our Top, Largest, Smallest or Latest Diaspore's.

Diaspore Stats/
Popularity Index: 27661hits
Total Items: 1items
Total Weight: CTS 1.08
Cheapest: USD 32.40
Most Expensive: USD 32.40
Largest: CTS 1.08
Smallest: CTS 1.08
Last Added: 02/16/16 08:25:09

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Book’s Corner/
Buy at DK Handbooks: Gemstones by Cally Hall and Harry Taylor
Price: USD 15.16
"Very good reference book to gems, stones and bones used in jewelry and ornamentations. Easy to use and read..."
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