Verdite and Petalite Physical Properties

Verdite

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

2.80-3.02.40

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

{110} Good

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

1.7 Mohs Hardness

36-6.5

2 10

1.8 Chemical Composition

NaFeS2•2(H2O)

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

Verdite and Petalite Chemical Formula

While comparing Verdite 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 Verdite and Petalite chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Verdite Vs Zircon

Verdite Vs White Opal

Verdite Vs Yttrium Aluminium Garnet

Verdite and Petalite Specific Gravity

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