Dallasite and Phenakite Physical Properties

Dallasite

Phenakite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.912.90-2.98

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Distinct on {11 2 0}, imperfect on {10 1 1}

1.7 Mohs Hardness

6.5-77.5-8

2 10

1.8 Chemical Composition

Not Available

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dallasite and Phenakite Chemical Formula

While comparing Dallasite and Phenakite 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 Dallasite and Phenakite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dallasite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dallasite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dallasite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Dallasite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.