Purpurite and Rock Crystal Physical Properties

Purpurite

Rock Crystal

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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

3.2-3.42.65

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

[100] [001] perfect

Not Available

1.7 Mohs Hardness

4-4.57

2 10

1.8 Chemical Composition

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

SiO 2Walter Schumann , Gemstones of the world (2001)

Purpurite and Rock Crystal Chemical Formula

While comparing Purpurite and Rock Crystal 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 Purpurite and Rock Crystal chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

Compare Violet Gemstones

Purpurite Vs Sapphire

Purpurite Vs Sard

Purpurite Vs Sardonyx

Purpurite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Purpurite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.65 whereas that of Rock Crystal is 2.65.