Lepidolite and Rock Crystal Physical Properties

Lepidolite

Rock Crystal

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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

2.80-2.902.65

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

{001} perfect

Not Available

1.7 Mohs Hardness

2.57

2 10

1.8 Chemical Composition

Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.

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

Lepidolite and Rock Crystal Chemical Formula

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

Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

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Lepidolite and Rock Crystal Specific Gravity

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