Fire Agate
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.5 – 7.0
Specific Gravity
2.6 – 2.64
Refractive Index
1.53 – 1.543
Crystal System
Trigonal
Luster
Vitreous,Waxy
Cleavage
None
Fracture
Uneven
Color
various
Birefringence
0.003
Pleochroism
Absent
Mohs Hardness
| Mohs | Reference mineral | Fire Agate |
|---|---|---|
| 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 Fire Agate
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 Fire Agate
ファイアアゲートは、メキシコとアメリカ南西部で産出する珍しいカルセドニーで、ゲーサイト（針鉄鉱）の層が光を干渉反射させることで、赤・橙・黄・緑の炎のような遊色を生じます。カボションカットで仕上げると深みのある遊色が最もよく現れます。コレクターに人気の独特な宝石です。
On this page
Jewelry Use
Durability
6/10
Science FYI Family
Frequently Asked Questions
What is Fire Agate?
ファイアアゲートは、メキシコとアメリカ南西部で産出する珍しいカルセドニーで、ゲーサイト（針鉄鉱）の層が光を干渉反射させることで、赤・橙・黄・緑の炎のような遊色を生じます。カボションカットで仕上げると深みのある遊色が最もよく現れます。コレクターに人気の独特な宝石です。
What is the hardness of Fire Agate?
Fire Agate has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Fire Agate?
Fire Agate is primarily Various.
How much does Fire Agate cost?
Fire Agate falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Fire Agate?
Fire Agate belongs to the Trigonal crystal system.