Crystal Opal and Thaumasite Physical Properties

Crystal Opal

Thaumasite

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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

1.97-2.221.91

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Not Available

Indistinct

1.7 Mohs Hardness

5.5-6.53.5

2 10

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

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

Crystal Opal and Thaumasite Chemical Formula

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

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

Compare Yellow Gemstones

Crystal Opal Vs Dravite

Crystal Opal Vs Diaspore

Crystal Opal Vs Diopside

Crystal Opal and Thaumasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Thaumasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Thaumasite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 1.91 whereas that of Thaumasite is 1.91.