Topaz and Gaspeite Physical Properties

Topaz

Gaspeite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.573.71

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

[001] Perfect

{10 1 1} Good

1.7 Mohs Hardness

84.5-5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

(Ni,Mg,Fe++)CO3

Topaz and Gaspeite Chemical Formula

While comparing Topaz and Gaspeite 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 Gaspeite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Gaspeite- (Ni,Mg,Fe++)CO3

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Topaz and Gaspeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Gaspeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Gaspeite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.71 whereas that of Gaspeite is 3.71.