Lazulite and Grandidierite Physical Properties

Lazulite

Grandidierite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.172.85-3.00

1 7.18

1.5 Fracture

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

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Perfect

1.7 Mohs Hardness

5.57.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Lazulite and Grandidierite Chemical Formula

While comparing Lazulite and Grandidierite 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 Lazulite and Grandidierite chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Lazulite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazulite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazulite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Lazulite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.