Topaz and Serandite Physical Properties

Topaz

Serandite

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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

3.49-3.573.52

1 7.18

1.5 Fracture

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

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

[001] Perfect

{100} Perfect, {001} Perfect

1.7 Mohs Hardness

85-5.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

Topaz and Serandite Chemical Formula

While comparing Topaz and Serandite 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 Serandite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Serandite- Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)

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Topaz and Serandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Serandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Serandite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.52 whereas that of Serandite is 3.52.