Polyhalite and Ruby Physical Properties

Polyhalite

Ruby

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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

2.783.97-4.05

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal

1.6 Cleavage

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

No true cleavage

1.7 Mohs Hardness

3.59

2 10

1.8 Chemical Composition

Not Available

Al ₂ O ₃

Polyhalite and Ruby Chemical Formula

While comparing Polyhalite and Ruby 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 Ruby chemical formula.

Chemical formula of Ruby- Al ₂ O ₃

Compare Red Gemstones

Polyhalite Vs Vanadinite

Polyhalite Vs Jacinth

Polyhalite Vs Heliotrope

Polyhalite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.