Galena and Chrysoprase Physical Properties

Galena

Chrysoprase

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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

6.232.58-2.64

1 7.18

1.5 Fracture

Subconchoidal, Brittle, Metallic

Gems, Sixth Edition (2006)

1.6 Cleavage

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

None

1.7 Mohs Hardness

2.5-2.756.5-7

2 10

1.8 Chemical Composition

PbS

SiO₂ (with a high level of nickel impurities )

Galena and Chrysoprase Chemical Formula

While comparing Galena and Chrysoprase 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 Chrysoprase chemical formula.

Chemical formula of Galena- PbS
Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Galena and Chrysoprase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and Chrysoprase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Chrysoprase Optical Properties during the identification of gemstone. Specific gravity of Galena is 2.58-2.64 whereas that of Chrysoprase is 2.58-2.64.