Sapphirine and Obsidian Physical Properties

Sapphirine

Obsidian

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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

3.40-3.582.35-2.60

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

{010} Perfect

Not Available

1.7 Mohs Hardness

7.55-5.5

2 10

1.8 Chemical Composition

(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Not Available

Sapphirine and Obsidian Chemical Formula

While comparing Sapphirine and Obsidian 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 Sapphirine and Obsidian chemical formula.

Chemical formula of Sapphirine- (Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sapphirine and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphirine and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphirine and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Sapphirine is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.