Johachidolite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
7.5
Specific Gravity
3.45
Refractive Index
1.717 – 1.724
Crystal System
Orthorhombic
Color
various
Birefringence
0.007
Mohs Hardness
| Mohs | Reference mineral | Johachidolite |
|---|---|---|
| 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 Johachidolite
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 Johachidolite
ヨハキドライトは、カルシウムアルミニウムホウ珪酸塩フッ化物鉱物（CaAlB₃O₇F）で、無色から淡黄色・橙色を示す極めて稀少な宝石です。朝鮮半島の地名「定義洞（ジョハキドン）」に因んで命名されました。宝石質の透明な標本は非常に希少で、最も入手困難な宝石のひとつとされます。
On this page
Jewelry Use
Durability
8/10
Suitable for daily wear
Science FYI Family
Frequently Asked Questions
What is Johachidolite?
ヨハキドライトは、カルシウムアルミニウムホウ珪酸塩フッ化物鉱物（CaAlB₃O₇F）で、無色から淡黄色・橙色を示す極めて稀少な宝石です。朝鮮半島の地名「定義洞（ジョハキドン）」に因んで命名されました。宝石質の透明な標本は非常に希少で、最も入手困難な宝石のひとつとされます。
What is the hardness of Johachidolite?
Johachidolite has a Mohs hardness of 7.5, making it excellent for use in jewelry.
What color is Johachidolite?
Johachidolite is primarily Various.
How much does Johachidolite cost?
Johachidolite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Johachidolite?
Johachidolite belongs to the Orthorhombic crystal system.