Purpurite and Emerald Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Hard
Specific Gravity
3.2-3.4
2.67-2.78
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
[100] [001] perfect
Imperfect on the [0001]
Mohs Hardness
4-4.5
7.5-8
Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Be3Al2SiO6
Purpurite and Emerald Chemical Formula
While comparing Purpurite and Emerald 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 Emerald chemical formula.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Emerald- Be3Al2SiO6
Purpurite and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Purpurite and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Emerald Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.67-2.78 whereas that of Emerald is 2.67-2.78.