Pollucite and Diopside Physical Properties

Pollucite

Diopside

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Readily soluble in HF

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.943.22-3.40

1 7.18

1.5 Fracture

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

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

None observed

Distinct/good on {110}

1.7 Mohs Hardness

6.5-75-6

2 10

1.8 Chemical Composition

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

CaMgSi₂O₆

Pollucite and Diopside Chemical Formula

While comparing Pollucite and Diopside 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 Diopside 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 Diopside- CaMgSi₂O₆

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Pollucite and Diopside Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Diopside Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.22-3.40 whereas that of Diopside is 3.22-3.40.