Gahnite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.5 – 8.0
Specific Gravity
4.0 – 4.62
Refractive Index
1.79 – 1.818
Crystal System
Isometric
Color
various
Mohs Hardness
| Mohs | Reference mineral | Gahnite |
|---|---|---|
| 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 Gahnite
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 Gahnite
ガーナイトは、亜鉛アルミニウムスピネル（ZnAl₂O₄）で、青色から緑色・暗青色を示します。透明な宝石質の標本は非常に稀で、コレクターに珍重されます。スカンジナビア、オーストラリア、ジンバブエなどが産地として知られています。スピネルグループの珍しい変種として宝石学的関心が高い鉱物です。
On this page
Jewelry Use
Durability
8/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Gahnite?
ガーナイトは、亜鉛アルミニウムスピネル（ZnAl₂O₄）で、青色から緑色・暗青色を示します。透明な宝石質の標本は非常に稀で、コレクターに珍重されます。スカンジナビア、オーストラリア、ジンバブエなどが産地として知られています。スピネルグループの珍しい変種として宝石学的関心が高い鉱物です。
What is the hardness of Gahnite?
Gahnite has a Mohs hardness of 7.5 to 8.0, making it excellent for use in jewelry.
What color is Gahnite?
Gahnite is primarily Various.
How much does Gahnite cost?
Gahnite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Gahnite?
Gahnite belongs to the Isometric crystal system.