Brucite

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Physical & Optical Properties

Category Collector Gems
Mohs Hardness 2.5
Specific Gravity 2.39
Refractive Index 1.56 – 1.6
Crystal System Trigonal
Cleavage Perfect
Color various
Birefringence 0.01

Mohs Hardness

1 Talc 2 Gypsum 3 Calcite 4 Fluorite 5 Apatite 6 Orthoclase 7 Quartz 8 Topaz 9 Corundum 10 Diamond Brucite
Mohs hardness of Brucite shown against the ten reference minerals, from talc (1) to diamond (10).
Mohs Reference mineral Brucite
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Crystal System

a a a Trigonal (Rhombohedral) a = b = c, α = β = γ ≠ 90°

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Brucite

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About Brucite

ブルーサイトは蛇紋岩・ドロマイト変成岩に産する板状の蝋光沢を持つ白色から淡緑・黄・青色の水酸化マグネシウム鉱物です。繊維状変種はネマタイトと呼ばれます。パキスタンのバルチスタン州が鮮やかな青緑色の宝石品質の標本産地として知られ、稀にファセット研磨されることもあります。

Science FYI Family

Frequently Asked Questions

What is Brucite?
ブルーサイトは蛇紋岩・ドロマイト変成岩に産する板状の蝋光沢を持つ白色から淡緑・黄・青色の水酸化マグネシウム鉱物です。繊維状変種はネマタイトと呼ばれます。パキスタンのバルチスタン州が鮮やかな青緑色の宝石品質の標本産地として知られ、稀にファセット研磨されることもあります。
What is the hardness of Brucite?
Brucite has a Mohs hardness of 2.5, making it relatively soft for use in jewelry.
What color is Brucite?
Brucite is primarily Various.
How much does Brucite cost?
Brucite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Brucite?
Brucite belongs to the Trigonal crystal system.