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Petoskey Stone
Petoskey Stone

Tourmaline
Tourmaline



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Petoskey Stone
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Tourmaline

Petoskey Stone and Tourmaline Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
Not Available2.85-3.35
Amber
1 7.18
1.5 Fracture
Not Available
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
Indistinct
1.7 Mohs Hardness
77-7.5
Amber
2 10
1.8 Chemical Composition
Not Available
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Petoskey Stone and Tourmaline Chemical Formula

While comparing Petoskey Stone and Tourmaline 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 Petoskey Stone and Tourmaline chemical formula.

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  • Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Petoskey Stone and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petoskey Stone and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petoskey Stone and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Petoskey Stone is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.