Tanzanite and Emerald Physical Properties

Tanzanite

Emerald

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

1.4 Specific Gravity

3.35

2.67-2.78

1.5 Fracture

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

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Perfect {010}, imperfect {100}

Imperfect on the [0001]

1.7 Mohs Hardness

6.5-7

7.5-8

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Be₃Al₂SiO₆

Tanzanite and Emerald Chemical Formula

While comparing Tanzanite and Emerald 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 Emerald chemical formula.

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

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Tanzanite and Emerald Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Emerald Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.67-2.78 whereas that of Emerald is 2.67-2.78.