Rock Crystal and Pyrophyllite Physical Properties

Rock Crystal

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.65-2.90

1 7.18

1.5 Fracture

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

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Not Available

{001} Perfect

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

SiO 2Walter Schumann , Gemstones of the world (2001)

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Rock Crystal and Pyrophyllite Chemical Formula

While comparing Rock Crystal and Pyrophyllite 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 Rock Crystal and Pyrophyllite chemical formula.

Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Rock Crystal Vs Scorzalite

Rock Crystal Vs Serendibite

Rock Crystal Vs Sardonyx

Rock Crystal and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rock Crystal and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rock Crystal and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Rock Crystal is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.