Alunite and Ametrine Physical Properties

Alunite and Ametrine Chemical Formula

While comparing Alunite and Ametrine 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 Alunite and Ametrine chemical formula.

• Chemical formula of Alunite- KAl3(SO4)2(OH)6
• Chemical formula of Ametrine- SiO₂

Alunite and Ametrine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Ametrine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Ametrine Optical Properties during the identification of gemstone. Specific gravity of Alunite is 2.65 whereas that of Ametrine is 2.65.