Vishnevite and Topaz Physical Properties

Vishnevite

Topaz

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.49-3.57

1 7.18

1.5 Fracture

Brittle, Uneven

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

1.6 Cleavage

Perfect

[001] Perfect

1.7 Mohs Hardness

5-68

2 10

1.8 Chemical Composition

Not Available

Al₂SiO₄(F,OH)₂

Vishnevite and Topaz Chemical Formula

While comparing Vishnevite 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 Vishnevite and Topaz chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

Compare Blue Gemstones

Vishnevite Vs Kainite

Vishnevite Vs Plumbogummite

Vishnevite Vs Lawsonite

Vishnevite and Topaz Specific Gravity

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