Galena and Demantoid Physical Properties

Galena

Demantoid

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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

6.233.77-3.95

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Not Available

1.6 Cleavage

Cubic perfect on [001], parting on [111]

Not Available

1.7 Mohs Hardness

2.5-2.756.5

2 10

1.8 Chemical Composition

PbS

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Galena and Demantoid Chemical Formula

While comparing Galena and Demantoid 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 Galena and Demantoid chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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Galena and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Galena is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.