Sellaite and Rock Crystal Physical Properties

Sellaite

Rock Crystal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.14-3.162.65

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

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

1.6 Cleavage

Perfect on {010} and {110}

Not Available

1.7 Mohs Hardness

5-5.57

2 10

1.8 Chemical Composition

MgF 2Ulrich Henn and Claudio C.

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

Sellaite and Rock Crystal Chemical Formula

While comparing Sellaite 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 Sellaite and Rock Crystal chemical formula.

Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

Compare White Gemstones

Sellaite Vs Thomsonite

Sellaite Vs Strontianite

Sellaite Vs Sussexite

Sellaite and Rock Crystal Specific Gravity

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