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Sinhalite
Sinhalite

Pollucite
Pollucite



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Sinhalite
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Pollucite

Sinhalite and Pollucite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Readily soluble in HF

Durability

-
-

Specific Gravity

3.46-3.502.86-2.94
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

Perfect
None observed

Mohs Hardness

6-76.5-7
2 10
👆🏻

Chemical Composition

MgAlBO 4Michael O’Donoghue , 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

Sinhalite and Pollucite Chemical Formula

While comparing Sinhalite 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 Sinhalite and Pollucite chemical formula.

  • Chemical formula of Sinhalite- MgAlBO 4Michael O’Donoghue , 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

Sinhalite and Pollucite Specific Gravity

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