Ettringite
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Physical & Optical Properties
Category
Collector Gems
Mohs Hardness
2.0 – 2.5
Specific Gravity
1.77
Refractive Index
1.47 – 1.491
Crystal System
Hexagonal
Cleavage
Perfect
Color
various
Birefringence
0.021
Mohs Hardness
| Mohs | Reference mineral | Ettringite |
|---|---|---|
| 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 Ettringite
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About Ettringite
钙矾石是一种含水钙铝硫酸盐矿物，以其鲜明的柠檬黄色和精美的针状或棱柱状晶体著称。晶体表面具有丝绢光泽，透明度高，外观优雅。尽管因其高水分含量和脆弱的结构使其难以切磨成宝石，但精美的晶体标本深受矿物收藏家喜爱。主要产地为美国加利福尼亚州和南非，通常产于碱性环境中。
On this page
Jewelry Use
Durability
1/10
Science FYI Family
Frequently Asked Questions
What is Ettringite?
钙矾石是一种含水钙铝硫酸盐矿物，以其鲜明的柠檬黄色和精美的针状或棱柱状晶体著称。晶体表面具有丝绢光泽，透明度高，外观优雅。尽管因其高水分含量和脆弱的结构使其难以切磨成宝石，但精美的晶体标本深受矿物收藏家喜爱。主要产地为美国加利福尼亚州和南非，通常产于碱性环境中。
What is the hardness of Ettringite?
Ettringite has a Mohs hardness of 2.0 to 2.5, making it relatively soft for use in jewelry.
What color is Ettringite?
Ettringite is primarily Various.
How much does Ettringite cost?
Ettringite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Ettringite?
Ettringite belongs to the Hexagonal crystal system.