Demantoid and Howlite Physical Properties

Demantoid

Howlite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.77-3.952.45-2.58

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

6.53-3.5

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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

Demantoid and Howlite Chemical Formula

While comparing Demantoid 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 Demantoid and Howlite chemical formula.

Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich 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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Demantoid and Howlite Specific Gravity

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