Foitite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.0
Specific Gravity
3.17
Crystal System
Hexagonal
Fracture
Irregular
Color
various
Pleochroism
Strong: pale lavender - dark blue
Mohs Hardness
| Mohs | Reference mineral | Foitite |
|---|---|---|
| 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 Foitite
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 Foitite
フォイタイトは、鉄アルミニウムを含む鉄端成分のトルマリンで、暗青色から黒色を示す稀少な変種です。X空格をナトリウムで満たしたトルマリン構造を持ちます。ペグマタイト岩中に産出し、主に鉱物学的研究の対象として知られています。宝石としての市場流通はほとんどありません。
On this page
Jewelry Use
Durability
7/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Foitite?
フォイタイトは、鉄アルミニウムを含む鉄端成分のトルマリンで、暗青色から黒色を示す稀少な変種です。X空格をナトリウムで満たしたトルマリン構造を持ちます。ペグマタイト岩中に産出し、主に鉱物学的研究の対象として知られています。宝石としての市場流通はほとんどありません。
What is the hardness of Foitite?
Foitite has a Mohs hardness of 7.0, making it excellent for use in jewelry.
What color is Foitite?
Foitite is primarily Various.
How much does Foitite cost?
Foitite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Foitite?
Foitite belongs to the Hexagonal crystal system.