Carnelian and Pollucite Physical Properties

Carnelian

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

2.58-2.642.86-2.94

1 7.18

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Absent

None observed

1.7 Mohs Hardness

6.5-76.5-7

2 10

1.8 Chemical Composition

SiO₂

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

Carnelian and Pollucite Chemical Formula

While comparing Carnelian 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 Carnelian and Pollucite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Carnelian and Pollucite Specific Gravity

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