Colemanite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
4.5
Specific Gravity
2.4 – 2.42
Refractive Index
1.584 – 1.615
Crystal System
Monoclinic
Luster
Vitreous
Cleavage
Perfect
Fracture
Uneven
Color
various
Birefringence
0.028
Pleochroism
Nil
Mohs Hardness
| Mohs | Reference mineral | Colemanite |
|---|---|---|
| 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
Budget (< $50/ct)
Where to Buy Colemanite
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 Colemanite
コールマナイトはカリフォルニア州の蒸発岩鉱床に産する無色から白色の単斜晶結晶と玻璃光沢を持つ水和ホウ酸カルシウム鉱物です。カリフォルニア州デスバレーのボロン鉱業の発展に重要な役割を果たした鉱物で、砂漠気候の乾燥地帯に特徴的な蒸発岩鉱物です。透明結晶はコレクター向けに研磨されることがあります。
On this page
Jewelry Use
Durability
3/10
Science FYI Family
Frequently Asked Questions
What is Colemanite?
コールマナイトはカリフォルニア州の蒸発岩鉱床に産する無色から白色の単斜晶結晶と玻璃光沢を持つ水和ホウ酸カルシウム鉱物です。カリフォルニア州デスバレーのボロン鉱業の発展に重要な役割を果たした鉱物で、砂漠気候の乾燥地帯に特徴的な蒸発岩鉱物です。透明結晶はコレクター向けに研磨されることがあります。
What is the hardness of Colemanite?
Colemanite has a Mohs hardness of 4.5, making it relatively soft for use in jewelry.
What color is Colemanite?
Colemanite is primarily Various.
How much does Colemanite cost?
Colemanite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Colemanite?
Colemanite belongs to the Monoclinic crystal system.