Goethite and Emerald Physical Properties
Tenacity
Not Available
Not Available
Solubility
HCl soluble
Not Available
Durability
Not Available
Hard
Specific Gravity
4.27-4.29
2.67-2.78
Fracture
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Perfect {010}
Imperfect on the [0001]
Mohs Hardness
5-5.5
7.5-8
Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)
Be3Al2SiO6
Goethite and Emerald Chemical Formula
While comparing Goethite and Emerald 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 Goethite and Emerald chemical formula.
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
- Chemical formula of Emerald- Be3Al2SiO6
Goethite and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Goethite and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Emerald Optical Properties during the identification of gemstone. Specific gravity of Goethite is 2.67-2.78 whereas that of Emerald is 2.67-2.78.