Chalcedony and Tourmaline Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
2.85-3.35
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Absent
Indistinct
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
SiO2
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Chalcedony and Tourmaline Chemical Formula
While comparing Chalcedony 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 Chalcedony and Tourmaline chemical formula.
- Chemical formula of Chalcedony- SiO2
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Chalcedony and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chalcedony and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.