Hercynite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.5 – 8.0
Specific Gravity
4.39
Refractive Index
1.8 – 1.83
Crystal System
Isometric
Fracture
Conchoidal
Color
various
Mohs Hardness
| Mohs | Reference mineral | Hercynite |
|---|---|---|
| 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 Hercynite
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 Hercynite
ヘルシナイトは、鉄アルミニウムスピネル（FeAl₂O₄）で、暗緑色から黒色を示します。スピネルグループの鉄端成分で、変成岩や一部の火成岩中に産出します。宝石質の透明な標本は非常に稀少で、主に鉱物学的研究の対象です。コレクターに珍重される稀少鉱物のひとつです。
On this page
Jewelry Use
Durability
8/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Hercynite?
ヘルシナイトは、鉄アルミニウムスピネル（FeAl₂O₄）で、暗緑色から黒色を示します。スピネルグループの鉄端成分で、変成岩や一部の火成岩中に産出します。宝石質の透明な標本は非常に稀少で、主に鉱物学的研究の対象です。コレクターに珍重される稀少鉱物のひとつです。
What is the hardness of Hercynite?
Hercynite has a Mohs hardness of 7.5 to 8.0, making it excellent for use in jewelry.
What color is Hercynite?
Hercynite is primarily Various.
How much does Hercynite cost?
Hercynite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Hercynite?
Hercynite belongs to the Isometric crystal system.