Diamond and Petalite Physical Properties

Diamond

Petalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Soluble

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.50-3.532.40

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

111 (perfect in four directions)

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

1.7 Mohs Hardness

106-6.5

2 10

1.8 Chemical Composition

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

Diamond and Petalite Chemical Formula

While comparing Diamond and Petalite 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 Diamond and Petalite chemical formula.

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

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Diamond and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diamond and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diamond and Petalite Optical Properties during the identification of gemstone. Specific gravity of Diamond is 2.40 whereas that of Petalite is 2.40.