Sogdianite and Topaz Physical Properties

Sogdianite

Topaz

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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

2.77-2.903.49-3.57

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

{0001} Perfect

[001] Perfect

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

(K,Na) 2(Li,Fe) 3(Zr,Ti,Fe)Si 12O 30Ulrich Henn and Claudio C.

Al₂SiO₄(F,OH)₂

Sogdianite and Topaz Chemical Formula

While comparing Sogdianite and Topaz 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 Sogdianite and Topaz chemical formula.

Chemical formula of Sogdianite- (K,Na) 2(Li,Fe) 3(Zr,Ti,Fe)Si 12O 30Ulrich Henn and Claudio C.
Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

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Sogdianite and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sogdianite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sogdianite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Sogdianite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.