Rock Crystal and Pollucite Physical Properties

Rock Crystal

Pollucite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.86-2.94

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Not Available

None observed

1.7 Mohs Hardness

76.5-7

2 10

1.8 Chemical Composition

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

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Rock Crystal and Pollucite Chemical Formula

While comparing Rock Crystal and Pollucite 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 Pollucite chemical formula.

Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Compare Blue Gemstones

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Rock Crystal Vs Sardonyx

Rock Crystal Vs Serendibite

Rock Crystal and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rock Crystal and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rock Crystal and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Rock Crystal is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.