Emerald and Rossmanite Physical Properties

Emerald

Rossmanite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.783

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

Imperfect on the [0001]

None

1.7 Mohs Hardness

7.5-8Not Available

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Emerald and Rossmanite Chemical Formula

While comparing Emerald and Rossmanite 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 Emerald and Rossmanite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Emerald and Rossmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Rossmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Rossmanite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3 whereas that of Rossmanite is 3.