Polyhalite and Danburite Physical Properties

Polyhalite

Danburite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.97-3.03

1 7.18

1.5 Fracture

Conchoidal, Brittle

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

{001} Poor

1.7 Mohs Hardness

3.57

2 10

1.8 Chemical Composition

Not Available

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

Polyhalite and Danburite Chemical Formula

While comparing Polyhalite and Danburite 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 Polyhalite and Danburite chemical formula.

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

Compare Red Gemstones

Polyhalite Vs Heliotrope

Polyhalite Vs Jacinth

Polyhalite Vs Vanadinite

Polyhalite and Danburite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Danburite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Danburite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.97-3.03 whereas that of Danburite is 2.97-3.03.