Amethyst and Lazulite Physical Properties

Amethyst

Lazulite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.04-3.17

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Indiscernible

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

75.5

2 10

1.8 Chemical Composition

SiO₂

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

Amethyst and Lazulite Chemical Formula

While comparing Amethyst 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 Amethyst and Lazulite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Amethyst and Lazulite Specific Gravity

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