Boulder Opal and Aegirine Physical Properties

Boulder Opal

Aegirine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.98-2.253.50-3.60

1 7.18

1.5 Fracture

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

Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Not Available

Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}

1.7 Mohs Hardness

5-6.56

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Boulder Opal and Aegirine Chemical Formula

While comparing Boulder Opal and Aegirine 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 Aegirine chemical formula.

Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Aegirine- (Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Boulder Opal Vs Chrome-Chalcedony

Boulder Opal Vs Chrysocolla

Boulder Opal and Aegirine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Aegirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Aegirine Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 3.50-3.60 whereas that of Aegirine is 3.50-3.60.