Topaz and Brazilianite Physical Properties

Topaz

Brazilianite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.572.98-2.99

1 7.18

1.5 Fracture

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

Conchoidal, Gems

1.6 Cleavage

[001] Perfect

(010) Distinct to good

1.7 Mohs Hardness

85.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

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

Topaz and Brazilianite Chemical Formula

While comparing Topaz and Brazilianite 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 Brazilianite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Gems for Sagittarius

Topaz Vs Quartz Smoky

Topaz Vs Pietersite

Topaz Vs Petoskey Stone

Topaz and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.