Boulder Opal and Sugilite Physical Properties

Boulder Opal

Sugilite

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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

1.98-2.252.69-2.79

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Not Available

Poor on {0001}

1.7 Mohs Hardness

5-6.55.5-6.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Boulder Opal and Sugilite Chemical Formula

While comparing Boulder Opal and Sugilite 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 Sugilite chemical formula.

Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

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Boulder Opal Vs Chrysocolla

Boulder Opal Vs Chrome Tourmaline

Boulder Opal and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.