Petalite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.0 – 6.5
Specific Gravity
2.4
Refractive Index
1.502 – 1.523
Crystal System
Monoclinic
Luster
Pearly
Cleavage
Glass
Fracture
Conchoidal
Color
various
Birefringence
0.012
Dispersion
0.0141
Pleochroism
Absent
Mohs Hardness
| Mohs | Reference mineral | Petalite |
|---|---|---|
| 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 Petalite
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 Petalite
ペタライトは、リチウムアルミノケイ酸塩鉱物で、花崗岩ペグマタイトに産し、無色・白・淡黄・淡ピンクの柱状〜板状結晶を形成してガラス〜真珠光沢を示します。ギリシャ語の「葉（ペタロン）」に由来し、スウェーデンのウトー島で初記載された歴史を持ちます。ブラジル・ジンバブエ・西オーストラリアにも産し、無色〜淡色の宝石質ペタライトはリチウム鉱物愛好家・コレクターに高い透明感が評価されています。
On this page
Jewelry Use
Durability
5/10
Science FYI Family
Frequently Asked Questions
What is Petalite?
ペタライトは、リチウムアルミノケイ酸塩鉱物で、花崗岩ペグマタイトに産し、無色・白・淡黄・淡ピンクの柱状〜板状結晶を形成してガラス〜真珠光沢を示します。ギリシャ語の「葉（ペタロン）」に由来し、スウェーデンのウトー島で初記載された歴史を持ちます。ブラジル・ジンバブエ・西オーストラリアにも産し、無色〜淡色の宝石質ペタライトはリチウム鉱物愛好家・コレクターに高い透明感が評価されています。
What is the hardness of Petalite?
Petalite has a Mohs hardness of 6.0 to 6.5, making it moderate for use in jewelry.
What color is Petalite?
Petalite is primarily Various.
How much does Petalite cost?
Petalite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Petalite?
Petalite belongs to the Monoclinic crystal system.