Pearl and Bytownite Physical Properties

Pearl

Bytownite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.852.72-2.75

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

none

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

1.7 Mohs Hardness

2.5-4.56-6.5

2 10

1.8 Chemical Composition

Not Available

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

Pearl and Bytownite Chemical Formula

While comparing Pearl 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 Pearl and Bytownite chemical formula.

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

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Pearl and Bytownite Specific Gravity

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