Pollucite and Coral Physical Properties

Pollucite

Coral

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Readily soluble in HF

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.942.60-2.70

1 7.18

1.5 Fracture

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

Irregular, Irregular, Gemstones of the world (2001)

1.6 Cleavage

None observed

Not Available

1.7 Mohs Hardness

6.5-73-4

2 10

1.8 Chemical Composition

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

CaCO 3Ulrich Henn and Claudio C.

Pollucite and Coral Chemical Formula

While comparing Pollucite and Coral 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 Pollucite and Coral chemical formula.

Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.

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Pollucite and Coral Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Coral Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Coral Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.60-2.70 whereas that of Coral is 2.60-2.70.