Amethyst and Bytownite Physical Properties

Amethyst

Bytownite

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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

2.652.72-2.75

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Indiscernible

Perfect on [001], good on [010], imperfect on [110]

1.7 Mohs Hardness

76-6.5

2 10

1.8 Chemical Composition

SiO₂

Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Amethyst and Bytownite Chemical Formula

While comparing Amethyst and Bytownite 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 Bytownite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Amethyst and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.