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
| 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
Value & Market
Price Tier
Budget (< $50/ct)
Where to Buy Brucite
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About Brucite
Brucite is a magnesium hydroxide mineral forming platy, waxy white to pale green, yellow, or blue crystals in serpentinite and marble, and is commercially extracted as a magnesium ore. Rare transparent to translucent yellow or light blue specimens from Nevada and Pakistan are occasionally cut as collector gems with a pearly to waxy luster. Its very low hardness limits its use in jewelry, but translucent blue material can be attractive.
On this page
Jewelry Use
Durability
1/10
Science FYI Family
Frequently Asked Questions
What is Brucite?
Brucite is a magnesium hydroxide mineral forming platy, waxy white to pale green, yellow, or blue crystals in serpentinite and marble, and is commercially extracted as a magnesium ore. Rare transparent to translucent yellow or light blue specimens from Nevada and Pakistan are occasionally cut as col
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.