Topaz and Binghamite Physical Properties

Topaz

Binghamite

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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

3.49-3.572.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

[001] Perfect

Not Available

1.7 Mohs Hardness

86.5-7

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

SiO 2Arthur Thomas , Gemstones (2009)

Topaz and Binghamite Chemical Formula

While comparing Topaz and Binghamite 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 Binghamite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Binghamite- SiO 2Arthur Thomas , Gemstones (2009)

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Topaz and Binghamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Binghamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Binghamite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.55-2.70 whereas that of Binghamite is 2.55-2.70.