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Mottramite
Mottramite

Dioptase
Dioptase



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Mottramite
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Dioptase

Mottramite and Dioptase Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Soluble

Durability

-
-

Specific Gravity

5.93.25-3.35
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Conchoidal, ConchoidalWalter Schumann

Cleavage

None observed
Perfect in three directions

Mohs Hardness

35
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Dioptase Chemical Formula

While comparing Mottramite and Dioptase 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 Dioptase chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Dioptase- CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Dioptase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.