Boulder Opal and Pyrope Physical Properties

Boulder Opal

Pyrope

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.253.62-3.87

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

5-6.57-7.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

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

Boulder Opal and Pyrope Chemical Formula

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

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

Compare Blue Gemstones

Boulder Opal Vs Chrysocolla

Boulder Opal Vs Chrome Tourmaline

Boulder Opal Vs Chrome-Chalcedony

Boulder Opal and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.