Falcons Eye and Apophyllite KF Physical Properties

Falcons Eye

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

2.58-2.642.33-2.37

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Not Available

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

74.5-5

2 10

1.8 Chemical Composition

SiO 2Walter Schumann , Gemstones of the world (2001)

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Falcons Eye and Apophyllite KF Chemical Formula

While comparing Falcons Eye 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 Falcons Eye and Apophyllite KF chemical formula.

Chemical formula of Falcons Eye- SiO 2Walter Schumann , Gemstones of the world (2001)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Falcons Eye and Apophyllite KF Specific Gravity

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