Anhydrite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
3.5
Specific Gravity
2.9 – 2.98
Refractive Index
1.57 – 1.614
Crystal System
Orthorhombic
Luster
Vitreous
Cleavage
Perfect
Fracture
Uneven
Color
various
Birefringence
0.044
Dispersion
0.013
Pleochroism
Weak
Mohs Hardness
| Mohs | Reference mineral | Anhydrite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | |
| 7 | Quartz | |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Price Tier
Budget (< $50/ct)
Where to Buy Anhydrite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
About Anhydrite
硬石膏是无水硫酸钙矿物，与含水的石膏密切相关。这种矿物通常呈白色、灰色或淡蓝色，具有珍珠至玻璃光泽。宝石级硬石膏呈现出柔和的淡蓝色至紫色，经切割后颇为美丽，但因其在潮湿环境下会缓慢转变为石膏而限制了其宝石用途。主要产地包括德国、奥地利和波兰。
On this page
Jewelry Use
Durability
2/10
Science FYI Family
Frequently Asked Questions
What is Anhydrite?
硬石膏是无水硫酸钙矿物，与含水的石膏密切相关。这种矿物通常呈白色、灰色或淡蓝色，具有珍珠至玻璃光泽。宝石级硬石膏呈现出柔和的淡蓝色至紫色，经切割后颇为美丽，但因其在潮湿环境下会缓慢转变为石膏而限制了其宝石用途。主要产地包括德国、奥地利和波兰。
What is the hardness of Anhydrite?
Anhydrite has a Mohs hardness of 3.5, making it relatively soft for use in jewelry.
What color is Anhydrite?
Anhydrite is primarily Various.
How much does Anhydrite cost?
Anhydrite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Anhydrite?
Anhydrite belongs to the Orthorhombic crystal system.