Topaz and Vivianite Physical Properties

Topaz

Vivianite

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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

3.49-3.572.64-2.70

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

[001] Perfect

{010} Perfect

1.7 Mohs Hardness

8Not Available

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Topaz and Vivianite Chemical Formula

While comparing Topaz and Vivianite 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 Vivianite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Gems for Sagittarius

Topaz Vs Quartz Smoky

Topaz Vs Pietersite

Topaz Vs Petoskey Stone

Topaz and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.