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Beryllonite
Beryllonite

Sylvite
Sylvite



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Beryllonite
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Sylvite

Beryllonite and Sylvite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

2.79-2.871.993
1 7.18
👆🏻

Fracture

Conchoidal
Uneven

Cleavage

{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Perfect on [100], [010], [001]

Mohs Hardness

5.5-62.5
2 10
👆🏻

Chemical Composition

NaBePO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
KCl

Beryllonite and Sylvite Chemical Formula

While comparing Beryllonite and Sylvite 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 Beryllonite and Sylvite chemical formula.

  • Chemical formula of Beryllonite- NaBePO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Sylvite- KCl

Beryllonite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryllonite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryllonite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Beryllonite is 1.993 whereas that of Sylvite is 1.993.