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
ロウ石（パイロフィライト）は、白〜淡黄・緑・灰色のアルミニウムケイ酸塩鉱物で、真珠〜絹糸光沢を持つ葉片状または放射状の集合体を形成し、触感は滑らかです。中国では寿山石として知られ、古来から印章や置物・工芸品の彫刻素材として芸術家に珍重されてきた歴史があります。現在も良質な緑色や白色の細粒塊状物が小型の彫刻品やコレクターアイテムとして加工されています。
On this page
Jewelry Use
Durability
1/10
Science FYI Family
Frequently Asked Questions
What is Pyrophyllite?
ロウ石（パイロフィライト）は、白〜淡黄・緑・灰色のアルミニウムケイ酸塩鉱物で、真珠〜絹糸光沢を持つ葉片状または放射状の集合体を形成し、触感は滑らかです。中国では寿山石として知られ、古来から印章や置物・工芸品の彫刻素材として芸術家に珍重されてきた歴史があります。現在も良質な緑色や白色の細粒塊状物が小型の彫刻品やコレクターアイテムとして加工されています。
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.