Jasper and Howlite Physical Properties

Jasper

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

2.58-2.91

2.45-2.58

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001)

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

1.6 Cleavage

Indiscernible

None

1.7 Mohs Hardness

6.5-7

3-3.5

1.8 Chemical Composition

SiO₂

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

Jasper and Howlite Chemical Formula

While comparing Jasper 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 Jasper and Howlite chemical formula.

Chemical formula of Jasper- SiO₂
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Jasper and Howlite Specific Gravity

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