Brazilianite and Smoky Quartz Physical Properties

Brazilianite

Smoky Quartz

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.98-2.992.65

1 7.18

1.5 Fracture

Conchoidal, Gems

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

(010) Distinct to good

{0110} Indistinct

1.7 Mohs Hardness

5.57

2 10

1.8 Chemical Composition

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO₂

Brazilianite and Smoky Quartz Chemical Formula

While comparing Brazilianite and Smoky Quartz 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 Brazilianite and Smoky Quartz chemical formula.

Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Smoky Quartz- SiO₂

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Brazilianite and Smoky Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brazilianite and Smoky Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brazilianite and Smoky Quartz Optical Properties during the identification of gemstone. Specific gravity of Brazilianite is 2.65 whereas that of Smoky Quartz is 2.65.