Topaz and Rhodolite Physical Properties

Topaz

Rhodolite

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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

3.49-3.573.84

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

[001] Perfect

none, may show indistinct parting

1.7 Mohs Hardness

87-7.5

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

(Mg,Fe)₃Al₂Si₃O₁₂

Topaz and Rhodolite Chemical Formula

While comparing Topaz and Rhodolite 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 Rhodolite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

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Topaz and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.84 whereas that of Rhodolite is 3.84.