Rhodolite and Topaz Physical Properties

Rhodolite

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

3.843.49-3.57

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

none, may show indistinct parting

[001] Perfect

1.7 Mohs Hardness

7-7.58

2 10

1.8 Chemical Composition

(Mg,Fe)₃Al₂Si₃O₁₂

Al₂SiO₄(F,OH)₂

Rhodolite and Topaz Chemical Formula

While comparing Rhodolite 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 Rhodolite and Topaz chemical formula.

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

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Rhodolite and Topaz Specific Gravity

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