Garnet and Petalite Physical Properties

Garnet

Petalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.55-4.332.40

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

Indistinct

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

1.7 Mohs Hardness

6.5-7.56-6.5

2 10

1.8 Chemical Composition

Garnet is a series of several different minerals with unique chemical formulas.

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

Garnet and Petalite Chemical Formula

While comparing Garnet 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 Garnet and Petalite chemical formula.

Chemical formula of Garnet- Garnet is a series of several different minerals with unique chemical formulas.
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Garnet and Petalite Specific Gravity

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