Diaspore
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.5 – 7.0
Specific Gravity
3.3 – 3.4
Refractive Index
1.702 – 1.75
Crystal System
Orthorhombic
Cleavage
Perfect
Color
various
Birefringence
0.048
Mohs Hardness
| Mohs | Reference mineral | Diaspore |
|---|---|---|
| 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 Diaspore
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 Diaspore
ダイアスポアは、アルミニウム酸化水酸化物（AlO(OH)）で、光源の変化により色が変わるカラーチェンジ効果を持つことで注目されています。トルコ産の宝石質ダイアスポアは「ズルタナイト」の商品名で知られ、昼光では黄緑色、白熱灯下では赤みを帯びた色に変化します。コレクターや宝石愛好家に人気の稀少石です。
On this page
Jewelry Use
Durability
6/10
Science FYI Family
Frequently Asked Questions
What is Diaspore?
ダイアスポアは、アルミニウム酸化水酸化物（AlO(OH)）で、光源の変化により色が変わるカラーチェンジ効果を持つことで注目されています。トルコ産の宝石質ダイアスポアは「ズルタナイト」の商品名で知られ、昼光では黄緑色、白熱灯下では赤みを帯びた色に変化します。コレクターや宝石愛好家に人気の稀少石です。
What is the hardness of Diaspore?
Diaspore has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Diaspore?
Diaspore is primarily Various.
How much does Diaspore cost?
Diaspore falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Diaspore?
Diaspore belongs to the Orthorhombic crystal system.