Pyrope Spessartine and Boulder Opal Physical Properties

Pyrope Spessartine

Boulder Opal

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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

3.62-4.331.98-2.25

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

1.7 Mohs Hardness

7-7.55-6.5

2 10

1.8 Chemical Composition

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

SiO 2 + H 2OUlrich Henn and Claudio C.

Pyrope Spessartine and Boulder Opal Chemical Formula

While comparing Pyrope Spessartine and Boulder Opal 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 Boulder Opal chemical formula.

Chemical formula of Pyrope Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Pyrope Spessartine and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope Spessartine and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope Spessartine and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Pyrope Spessartine is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.