Thaumasite and Crystal Opal Physical Properties

Thaumasite

Crystal Opal

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.911.97-2.22

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

Indistinct

Not Available

1.7 Mohs Hardness

3.55.5-6.5

2 10

1.8 Chemical Composition

Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.

SiO 2 + H 2OUlrich Henn and Claudio C.

Thaumasite and Crystal Opal Chemical Formula

While comparing Thaumasite and Crystal 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 Thaumasite and Crystal Opal chemical formula.

Chemical formula of Thaumasite- Ca 6Si 2(CO 3) 2(SO 4) 2(OH) 12 · 24H 2OUlrich Henn and Claudio C.
Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Thaumasite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thaumasite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thaumasite and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Thaumasite is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.