Dioptase and Pollucite Physical Properties

Dioptase

Pollucite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.352.86-2.94

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect in three directions

None observed

1.7 Mohs Hardness

56.5-7

2 10

1.8 Chemical Composition

CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Dioptase and Pollucite Chemical Formula

While comparing Dioptase 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 Dioptase and Pollucite chemical formula.

Chemical formula of Dioptase- CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Compare Green Gemstones

Dioptase Vs Euclase

Dioptase Vs Feldspar

Dioptase Vs Faustite

Dioptase and Pollucite Specific Gravity

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