Alabaster and Nosean Physical Properties

Alabaster and Nosean Chemical Formula

While comparing Alabaster and Nosean 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 Alabaster and Nosean chemical formula.

• Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
• Chemical formula of Nosean- Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)

Alabaster and Nosean Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Nosean Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 2.30-2.40 whereas that of Nosean is 2.30-2.40.