Fayalite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.5 – 7.0
Specific Gravity
4.392
Refractive Index
1.827 – 1.879
Crystal System
Orthorhombic
Luster
Vitreous,Resinous
Cleavage
Imperfect
Fracture
Conchoidal
Color
various
Pleochroism
Faint: pale yellow - yellow-orange, reddish brown.
Mohs Hardness
| Mohs | Reference mineral | Fayalite |
|---|---|---|
| 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 Fayalite
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 Fayalite
ファヤライトは、鉄カンラン石（Fe₂SiO₄）で、オリビン（カンラン石）グループの鉄端成分です。暗黄緑色から褐色を示し、透明な宝石質の標本は非常に稀少です。カナリア諸島のラ・パルマ島産の火山岩中に美しい結晶が見られます。宝石としての流通はほとんどありません。
On this page
Jewelry Use
Durability
6/10
Science FYI Family
Frequently Asked Questions
What is Fayalite?
ファヤライトは、鉄カンラン石（Fe₂SiO₄）で、オリビン（カンラン石）グループの鉄端成分です。暗黄緑色から褐色を示し、透明な宝石質の標本は非常に稀少です。カナリア諸島のラ・パルマ島産の火山岩中に美しい結晶が見られます。宝石としての流通はほとんどありません。
What is the hardness of Fayalite?
Fayalite has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Fayalite?
Fayalite is primarily Various.
How much does Fayalite cost?
Fayalite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Fayalite?
Fayalite belongs to the Orthorhombic crystal system.