Phenakite and Lazulite Physical Properties

Phenakite

Lazulite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.983.04-3.17

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gemstones of the world (2001) More from other references

1.6 Cleavage

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

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

7.5-85.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Phenakite and Lazulite Chemical Formula

While comparing Phenakite and Lazulite 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 Phenakite and Lazulite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Compare Colorless Gems

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Phenakite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.