Kyanite and Phenakite Physical Properties

Kyanite

Phenakite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.652.90-2.98

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

Distinct on {11 2 0}, imperfect on {10 1 1}

1.7 Mohs Hardness

4-77.5-8

2 10

1.8 Chemical Composition

Not Available

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Phenakite Chemical Formula

While comparing Kyanite and Phenakite 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 Kyanite and Phenakite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Kyanite Vs Kashmir sapphire

Kyanite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.