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
エトリンジャイトは、カルシウムアルミニウム硫酸塩水酸化物水和物鉱物で、鮮やかな黄色の六角柱状結晶が特徴です。南アフリカのN'Chwaning鉱山が主要産地として知られています。非常に稀で、収集家に珍重される美しい結晶標本として高い価値があります。
On this page
Jewelry Use
Durability
1/10
Science FYI Family
Frequently Asked Questions
What is Ettringite?
エトリンジャイトは、カルシウムアルミニウム硫酸塩水酸化物水和物鉱物で、鮮やかな黄色の六角柱状結晶が特徴です。南アフリカのN'Chwaning鉱山が主要産地として知られています。非常に稀で、収集家に珍重される美しい結晶標本として高い価値があります。
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.