Achroite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.0 – 7.5
Specific Gravity
2.9 – 3.4
Refractive Index
1.614 – 1.666
Crystal System
Trigonal
Luster
Vitreous
Cleavage
Indistinct
Fracture
Uneven,Conchoidal
Color
various
Birefringence
0.014
Dispersion
0.017
Mohs Hardness
| Mohs | Reference mineral | Achroite |
|---|---|---|
| 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
Moderate ($50-500/ct)
Where to Buy Achroite
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 Achroite
无色碧玺是电气石族中最罕见的变种，因完全缺乏致色元素而呈现出非凡的无色透明度。这种纯净的宝石展示出极为清澈的晶体，偶尔带有极淡的粉色或灰色调。无色碧玺主要产自巴西、斯里兰卡和马达加斯加，以其独特的双折射性和强烈的多色性而受到宝石学家的高度关注。
On this page
Jewelry Use
Durability
7/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Achroite?
无色碧玺是电气石族中最罕见的变种，因完全缺乏致色元素而呈现出非凡的无色透明度。这种纯净的宝石展示出极为清澈的晶体，偶尔带有极淡的粉色或灰色调。无色碧玺主要产自巴西、斯里兰卡和马达加斯加，以其独特的双折射性和强烈的多色性而受到宝石学家的高度关注。
What is the hardness of Achroite?
Achroite has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Achroite?
Achroite is primarily Various.
How much does Achroite cost?
Achroite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Achroite?
Achroite belongs to the Trigonal crystal system.