Howlite and Sinhalite Physical Properties

Howlite

Sinhalite

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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

2.45-2.583.46-3.50

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

3-3.56-7

2 10

1.8 Chemical Composition

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

MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Howlite and Sinhalite Chemical Formula

While comparing Howlite and Sinhalite 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 Howlite and Sinhalite chemical formula.

Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sinhalite- MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Howlite and Sinhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Sinhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Sinhalite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.46-3.50 whereas that of Sinhalite is 3.46-3.50.