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Home / Gem Library / Gemstones Varieties / Diaspore May 26, 2022

Natural Diaspore

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.

  • There are 31 Diaspore gemstones available at
  • Diaspore(s) are organized in the following categories: Single,  gemstones.
  • Our most expensive Diaspore is USD 503.40 and largest Diaspore weight is CTS 8.39.
  • Our cheapest Diaspore is USD 64.00 and smallest Diaspore weight is CTS 1.23.

Find your Diaspore

Our Diaspore(s) are available in various shapes, sizes and colors. 31 Diaspore(s), too many to look through? You may select any combination of search options. Colors grade into each other and you can search for more than one color at once. For a better selection, try selecting two or three colors, -- your first choice plus the two closest colors.

Shape Length (mm) Width (mm)
Category Weight (cts) Price (USD)
Color range
red-orange or orange-red
strongly yellowish green
orangy yellow
yellowish green
yellow-green or green-yellow

Diaspore Profile

Color information: 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
Sign of the Zodiac: N/A
Month of the year: N/A
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.

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Diaspore range/
Diaspore Single
Diaspore Single Cushion Moderately included
Size: 13.50 X 10.40 MM
Weight: 8.390 CTS
Shape: Cushion
Clarity: Moderately included
Usually ships within 24 hours
USD 503.40
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Diaspore Single
Diaspore Single Oval Eye clean to Slightly included
Size: 7.00 X 5.50 MM
Weight: 1.280 CTS
Shape: Oval
Clarity: Eye clean to Slightly included
Usually ships within 24 hours
USD 64.00
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Gem Library/
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Reference and  Links Reference and Links
Recommended books and links to Gem, Jewelry&Mineral Magazines, Gem Institutes and Labs.

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