Pyrope Spessartine and Howlite Physical Properties

Pyrope Spessartine

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

3.62-4.332.45-2.58

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

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

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

7-7.53-3.5

2 10

1.8 Chemical Composition

Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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

Pyrope Spessartine and Howlite Chemical Formula

While comparing Pyrope Spessartine 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 Pyrope Spessartine and Howlite chemical formula.

Chemical formula of Pyrope Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyrope Spessartine and Howlite Specific Gravity

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