Amethyst and Phenakite Physical Properties

Amethyst

Phenakite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.90-2.98

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Indiscernible

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

1.7 Mohs Hardness

77.5-8

2 10

1.8 Chemical Composition

SiO₂

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

Amethyst and Phenakite Chemical Formula

While comparing Amethyst 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 Amethyst and Phenakite chemical formula.

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

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Amethyst and Phenakite Specific Gravity

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