Topaz and Brucite Physical Properties

Topaz

Brucite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.572.39

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Irregular

1.6 Cleavage

[001] Perfect

Perfect on {0001}

1.7 Mohs Hardness

82.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Topaz and Brucite Chemical Formula

While comparing Topaz and Brucite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Topaz and Brucite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Gems for Sagittarius

Topaz Vs Quartz Smoky

Topaz Vs Pietersite

Topaz Vs Petoskey Stone

Topaz and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Brucite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.39 whereas that of Brucite is 2.39.