Phenakite and Amethyst Physical Properties

Phenakite

Amethyst

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.982.65

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Indiscernible

1.7 Mohs Hardness

7.5-87

2 10

1.8 Chemical Composition

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

SiO₂

Phenakite and Amethyst Chemical Formula

While comparing Phenakite and Amethyst 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 Phenakite and Amethyst chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Amethyst- SiO₂

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Phenakite and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.65 whereas that of Amethyst is 2.65.