Rhodolite and Purpurite Physical Properties

Rhodolite

Purpurite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.843.2-3.4

1 7.18

1.5 Fracture

Conchoidal

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

none, may show indistinct parting

[100] [001] perfect

1.7 Mohs Hardness

7-7.54-4.5

2 10

1.8 Chemical Composition

(Mg,Fe)₃Al₂Si₃O₁₂

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Rhodolite and Purpurite Chemical Formula

While comparing Rhodolite and Purpurite 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 Rhodolite and Purpurite chemical formula.

Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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Rhodolite and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodolite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodolite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Rhodolite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.