Howlite and Vesuvianite Physical Properties

Howlite

Vesuvianite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Vesuvianite is virtually insolouble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.45-2.583.32-3.43

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

None

Poor on {110} and {100} very poor on {001}

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

Not Available

Howlite and Vesuvianite Chemical Formula

While comparing Howlite and Vesuvianite 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 Vesuvianite chemical formula.

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

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Howlite and Vesuvianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Vesuvianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Vesuvianite Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.32-3.43 whereas that of Vesuvianite is 3.32-3.43.