Crocoite
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Physical & Optical Properties
Category
Collector Gems
Mohs Hardness
2.5 – 3.0
Specific Gravity
5.9 – 6.1
Refractive Index
2.31 – 2.66
Crystal System
Monoclinic
Fracture
Conchoidal
Color
various
Birefringence
0.35
Pleochroism
Distinctly trichroic
Mohs Hardness
| Mohs | Reference mineral | Crocoite |
|---|---|---|
| 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 Crocoite
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About Crocoite
クロコアイトは、鮮やかな朱赤色から橙赤色を示すクロム酸鉛鉱物（PbCrO₄）です。細長い柱状または針状の結晶が特徴的で、タスマニア産のものが世界的に有名です。ダイヤモンド光沢を持ち、非常に美しい外観を呈しますが、劈開が完全で脆く、宝飾加工には不向きなため専らコレクターズアイテムです。
On this page
Jewelry Use
Durability
1/10
Science FYI Family
Frequently Asked Questions
What is Crocoite?
クロコアイトは、鮮やかな朱赤色から橙赤色を示すクロム酸鉛鉱物（PbCrO₄）です。細長い柱状または針状の結晶が特徴的で、タスマニア産のものが世界的に有名です。ダイヤモンド光沢を持ち、非常に美しい外観を呈しますが、劈開が完全で脆く、宝飾加工には不向きなため専らコレクターズアイテムです。
What is the hardness of Crocoite?
Crocoite has a Mohs hardness of 2.5 to 3.0, making it relatively soft for use in jewelry.
What color is Crocoite?
Crocoite is primarily Various.
How much does Crocoite cost?
Crocoite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Crocoite?
Crocoite belongs to the Monoclinic crystal system.