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Mottramite
Mottramite

Sardonyx
Sardonyx



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Mottramite
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Sardonyx

Mottramite and Sardonyx Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.92.55-2.70
1 7.18
👆🏻

Fracture

Sub-Conchoidal
-

Cleavage

None observed
None

Mohs Hardness

36.5-7
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
SiO 2Ulrich Henn and Claudio C.

Mottramite and Sardonyx Chemical Formula

While comparing Mottramite and Sardonyx 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 Mottramite and Sardonyx chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.

Mottramite and Sardonyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Sardonyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Sardonyx Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 2.55-2.70 whereas that of Sardonyx is 2.55-2.70.