Peridot and Howlite Physical Properties

Peridot

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

1.54-1.552.45-2.58

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

Poor

None

1.7 Mohs Hardness

6.5-73-3.5

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

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

Peridot and Howlite Chemical Formula

While comparing Peridot 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 Peridot and Howlite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Peridot and Howlite Specific Gravity

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