Schorl
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.0
Specific Gravity
3.18 – 3.22
Refractive Index
1.635 – 1.672
Crystal System
Hexagonal
Luster
Vitreous,Resinous
Cleavage
Poor
Fracture
Uneven,Conchoidal
Color
various
Birefringence
0.025
Pleochroism
Very strong: yellow-brown - pale yellow, pale brown.
Mohs Hardness
| Mohs | Reference mineral | Schorl |
|---|---|---|
| 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 Schorl
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 Schorl
ショールはトルマリン族の中で最も普遍的な種で、鉄に富む黒色変種として、世界各地の花崗岩ペグマタイトや片岩中に特徴的な縦条を持つ光沢のある不透明な柱状結晶を形成します。不透明なためファセット加工には適しませんが、古代からビーズや喪服用装身具に使用され、クリスタルヒーリングでも広く使われています。ブラジルとパキスタン産の大型整形結晶は展示標本として人気です。
On this page
Jewelry Use
Durability
7/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Schorl?
ショールはトルマリン族の中で最も普遍的な種で、鉄に富む黒色変種として、世界各地の花崗岩ペグマタイトや片岩中に特徴的な縦条を持つ光沢のある不透明な柱状結晶を形成します。不透明なためファセット加工には適しませんが、古代からビーズや喪服用装身具に使用され、クリスタルヒーリングでも広く使われています。ブラジルとパキスタン産の大型整形結晶は展示標本として人気です。
What is the hardness of Schorl?
Schorl has a Mohs hardness of 7.0, making it excellent for use in jewelry.
What color is Schorl?
Schorl is primarily Various.
How much does Schorl cost?
Schorl falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Schorl?
Schorl belongs to the Hexagonal crystal system.