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Petalite
Petalite

London blue topaz
London blue topaz



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Petalite
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London blue topaz

Petalite and London blue topaz Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
insoluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.40Not Available
Amber
1 7.18
1.5 Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Not Available
1.6 Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Not Available
1.7 Mohs Hardness
6-6.5Not Available
Amber
2 10
1.8 Chemical Composition
LiAlSi 4O 10Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Not Available

Petalite and London blue topaz Chemical Formula

While comparing Petalite and London blue topaz 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 Petalite and London blue topaz chemical formula.

  • Chemical formula of Petalite- LiAlSi 4O 10Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
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Petalite and London blue topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petalite and London blue topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and London blue topaz Optical Properties during the identification of gemstone. Specific gravity of Petalite is Not Available whereas that of London blue topaz is Not Available.