Star Ruby and Apophyllite KF Physical Properties

Star Ruby

Apophyllite KF

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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

3.95-4.102.33-2.37

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Not Available

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

Not Available4.5-5

2 10

1.8 Chemical Composition

Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Star Ruby and Apophyllite KF Chemical Formula

While comparing Star Ruby and Apophyllite KF 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 Ruby and Apophyllite KF chemical formula.

Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Star Ruby and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.