Topaz and Johachidolite Physical Properties

Topaz

Johachidolite

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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

3.49-3.573.45

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

[001] Perfect

None

1.7 Mohs Hardness

87.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

CaAlB 3O 7Michael OâDonoghue , Gems, Sixth Edition (2006)

Topaz and Johachidolite Chemical Formula

While comparing Topaz and Johachidolite 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 Johachidolite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Johachidolite- CaAlB 3O 7Michael OâDonoghue , Gems, Sixth Edition (2006)

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Topaz and Johachidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Johachidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Johachidolite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.45 whereas that of Johachidolite is 3.45.