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 Home / Gem Library / Natural Gemstones / Diaspore May 29, 2023  

Natural Diaspore
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There are 30 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: 368520hits
Total Items: 30items
Total Weight: CTS 64.24
Cheapest: USD 64.00
Most Expensive: USD 503.40
Largest: CTS 8.39
Smallest: CTS 1.23
Last Added: 10/30/20 07:19:31

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Book’s Corner/
Buy at Gemology by Cornelius S. Hurlbut, Robert C. Kammerling
Price: USD 175.00
"This book is an excellent source of information for people interested in the field of gemmology..."
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