Cryolite and Howlite Physical Properties

Cryolite

Howlite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.97

2.45-2.58

1.5 Fracture

Uneven

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

None observed

None

1.7 Mohs Hardness

2.5

3-3.5

1.8 Chemical Composition

Na 3AlF 6Ulrich Henn and Claudio C.

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cryolite and Howlite Chemical Formula

While comparing Cryolite and Howlite 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 Cryolite and Howlite chemical formula.

Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cryolite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cryolite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cryolite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Cryolite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.