Tanzanite and Rosasite Physical Properties

Tanzanite

Rosasite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Effervesces in cold

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.354-4.2

1 7.18

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

Splintery

1.6 Cleavage

Perfect {010}, imperfect {100}

Perfect on {100} and {010}

1.7 Mohs Hardness

6.5-74

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Not Available

Tanzanite and Rosasite Chemical Formula

While comparing Tanzanite and Rosasite 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 Tanzanite and Rosasite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Tanzanite and Rosasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Rosasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Rosasite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 4-4.2 whereas that of Rosasite is 4-4.2.