Star Sapphire and Thaumasite Physical Properties

Star Sapphire

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

3.90-4.051.91

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Indistinct

1.7 Mohs Hardness

Not Available3.5

2 10

1.8 Chemical Composition

Al 2O 3Ulrich Henn and Claudio C.

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

Star Sapphire and Thaumasite Chemical Formula

While comparing Star Sapphire 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 Star Sapphire and Thaumasite chemical formula.

Chemical formula of Star Sapphire- Al 2O 3Ulrich 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 Blue Gemstones

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Star Sapphire Vs Tourmaline

Star Sapphire Vs Tortoiseshell

Star Sapphire and Thaumasite Specific Gravity

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