Spodumene and Ruby Physical Properties

Spodumene

Ruby

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.15-3.213.97-4.05

1 7.18

1.5 Fracture

Uneven, Subconchoidal, Gemstones (2009)

Conchoidal

1.6 Cleavage

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

No true cleavage

1.7 Mohs Hardness

6-79

2 10

1.8 Chemical Composition

LiAlSi₂O₆

Al ₂ O ₃

Spodumene and Ruby Chemical Formula

While comparing Spodumene 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 Spodumene and Ruby chemical formula.

Chemical formula of Spodumene- LiAlSi₂O₆
Chemical formula of Ruby- Al ₂ O ₃

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Spodumene and Ruby Specific Gravity

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