Prehnite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.0 – 6.5
Specific Gravity
2.8 – 2.95
Refractive Index
1.611 – 1.673
Crystal System
Orthorhombic
Luster
Vitreous,Pearly
Cleavage
Good
Fracture
Uneven
Color
various
Birefringence
0.021
Pleochroism
Absent
Mohs Hardness
| Mohs | Reference mineral | Prehnite |
|---|---|---|
| 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 Prehnite
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 Prehnite
葡萄石是钙铝层状硅酸盐矿物，化学式为Ca2Al2Si3O10(OH)2，以苦艾绿（黄绿至苹果绿）为标志色，常呈半透明至透明的集合体，玻璃至蜡质光泽，偶有猫眼效应。葡萄石以1788年首次描述这种矿物的荷兰上校亨德里克·冯·普雷恩命名，是第一种以个人命名的矿物之一。1999年优质葡萄石出现于澳大利亚珠宝市场后，其受欢迎程度大幅提升。主要产地包括澳大利亚（昆士兰州，苹果绿）、南非、中国（云南）、马达加斯加和美国。摩氏硬度6至6.5，适合蛋面型宝石，颜色清新自然，近年在欧美市场颇受欢迎。
On this page
Jewelry Use
Durability
5/10
Science FYI Family
Frequently Asked Questions
What is Prehnite?
葡萄石是钙铝层状硅酸盐矿物，化学式为Ca2Al2Si3O10(OH)2，以苦艾绿（黄绿至苹果绿）为标志色，常呈半透明至透明的集合体，玻璃至蜡质光泽，偶有猫眼效应。葡萄石以1788年首次描述这种矿物的荷兰上校亨德里克·冯·普雷恩命名，是第一种以个人命名的矿物之一。1999年优质葡萄石出现于澳大利亚珠宝市场后，其受欢迎程度大幅提升。主要产地包括澳大利亚（昆士兰州，苹果绿）、南非、中国（云南）、马达加斯加和美国。摩氏硬度6至6.5，适合蛋面型宝石，颜色清新自然，近年在欧美市场颇受欢迎。
What is the hardness of Prehnite?
Prehnite has a Mohs hardness of 6.0 to 6.5, making it moderate for use in jewelry.
What color is Prehnite?
Prehnite is primarily Various.
How much does Prehnite cost?
Prehnite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Prehnite?
Prehnite belongs to the Orthorhombic crystal system.