Tanzanite and Spodumene Physical Properties

Tanzanite

Spodumene

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

3.15-3.21

1.5 Fracture

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

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

Perfect {010}, imperfect {100}

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

1.7 Mohs Hardness

6.5-7

6-7

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

LiAlSi₂O₆

Tanzanite and Spodumene Chemical Formula

While comparing Tanzanite and Spodumene 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 Spodumene chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Spodumene- LiAlSi₂O₆

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Tanzanite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.