Tanzanite and Alabaster Physical Properties

Tanzanite

Alabaster

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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

3.352.30

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect {010}, imperfect {100}

Not Available

1.7 Mohs Hardness

6.5-72

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

Tanzanite and Alabaster Chemical Formula

While comparing Tanzanite and Alabaster 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 Alabaster chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

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Tanzanite and Alabaster Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Alabaster Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Alabaster Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.30 whereas that of Alabaster is 2.30.