Petalite and Diamond Physical Properties

Petalite

Diamond

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.403.50-3.53

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Perfect on {001}, poor on {201} with 38.5° angle between the two

111 (perfect in four directions)

1.7 Mohs Hardness

6-6.510

2 10

1.8 Chemical Composition

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Petalite and Diamond Chemical Formula

While comparing Petalite and Diamond 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 Petalite and Diamond chemical formula.

Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Diamond- C

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Petalite Vs Scolecite

Petalite Vs Sapphire

Petalite Vs Scheelite

Petalite and Diamond Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petalite and Diamond Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Diamond Optical Properties during the identification of gemstone. Specific gravity of Petalite is 3.50-3.53 whereas that of Diamond is 3.50-3.53.