Brucite and Grandidierite Physical Properties

Brucite

Grandidierite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.392.85-3.00

1 7.18

1.5 Fracture

Irregular

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

Perfect on {0001}

Perfect

1.7 Mohs Hardness

2.57.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Brucite and Grandidierite Chemical Formula

While comparing Brucite and Grandidierite 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 Brucite and Grandidierite chemical formula.

Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Compare Blue Gemstones

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Brucite Vs Chrysocolla

Brucite Vs Common Opal

Brucite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.