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
プレーナイトは、淡黄緑色〜アップルグリーンの葉珪酸塩鉱物で、半透明〜透明の特徴的な外観と蝋状〜ガラス光沢をもちます。18世紀に南アフリカから標本をヨーロッパに持ち帰ったオランダ将校ヘンドリック・フォン・プレーンに敬意を表して命名された、人名を冠した最初の鉱物の一つです。良質なカボションには繊細なキャッツアイや内部に雲状の模様が現れ、デザイナーズジュエリーへの需要が高まっています。
On this page
Jewelry Use
Durability
5/10
Science FYI Family
Frequently Asked Questions
What is Prehnite?
プレーナイトは、淡黄緑色〜アップルグリーンの葉珪酸塩鉱物で、半透明〜透明の特徴的な外観と蝋状〜ガラス光沢をもちます。18世紀に南アフリカから標本をヨーロッパに持ち帰ったオランダ将校ヘンドリック・フォン・プレーンに敬意を表して命名された、人名を冠した最初の鉱物の一つです。良質なカボションには繊細なキャッツアイや内部に雲状の模様が現れ、デザイナーズジュエリーへの需要が高まっています。
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.