Tanzanite and Goshenite Physical Properties

Tanzanite

Goshenite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

2.60-2.90

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect {010}, imperfect {100}

3,1 basal

1.7 Mohs Hardness

6.5-7

7.5-8

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Be₃Al₂SiO₆

Tanzanite and Goshenite Chemical Formula

While comparing Tanzanite and Goshenite 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 Goshenite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Goshenite- Be₃Al₂SiO₆

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Tanzanite and Goshenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Goshenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Goshenite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.60-2.90 whereas that of Goshenite is 2.60-2.90.