Pyrophyllite
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Physical & Optical Properties
Category
Collector Gems
Mohs Hardness
1.0 – 2.0
Specific Gravity
2.65 – 2.9
Refractive Index
1.534 – 1.601
Crystal System
Monoclinic
Luster
Pearly,Greasy
Cleavage
Perfect
Fracture
Splintery
Color
various
Birefringence
0.05
Pleochroism
Nil
Mohs Hardness
| Mohs | Reference mineral | Pyrophyllite |
|---|---|---|
| 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 Pyrophyllite
Links may earn a commission at no extra cost to you.
About Pyrophyllite
叶蜡石是一种含水铝硅酸盐矿物，化学式为Al2Si4O10(OH)2，质地细腻，触感油腻，颜色多为白色、灰白、黄绿至浅绿色，常呈叶片状、块状或放射状集合体，光泽蜡质至珍珠状。叶蜡石硬度仅1至2（极软），极易雕刻，自古以来是中国印章石（图章石）的重要材料，被称为冻石或软石，浙江青田石、福建寿山石（鸡血石）等中国名贵印章石均属于或近似叶蜡石类矿物。在工业上，叶蜡石也是重要的耐火材料和陶瓷原料。作为观赏石和印章材料，叶蜡石在东亚文化中有极为重要的地位。
On this page
Jewelry Use
Durability
1/10
Science FYI Family
Frequently Asked Questions
What is Pyrophyllite?
叶蜡石是一种含水铝硅酸盐矿物，化学式为Al2Si4O10(OH)2，质地细腻，触感油腻，颜色多为白色、灰白、黄绿至浅绿色，常呈叶片状、块状或放射状集合体，光泽蜡质至珍珠状。叶蜡石硬度仅1至2（极软），极易雕刻，自古以来是中国印章石（图章石）的重要材料，被称为冻石或软石，浙江青田石、福建寿山石（鸡血石）等中国名贵印章石均属于或近似叶蜡石类矿物。在工业上，叶蜡石也是重要的耐火材料和陶瓷原料。作为观赏石和印章材料，叶蜡石在东亚文化中有极为重要的地位。
What is the hardness of Pyrophyllite?
Pyrophyllite has a Mohs hardness of 1.0 to 2.0, making it relatively soft for use in jewelry.
What color is Pyrophyllite?
Pyrophyllite is primarily Various.
How much does Pyrophyllite cost?
Pyrophyllite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Pyrophyllite?
Pyrophyllite belongs to the Monoclinic crystal system.