Topaz and Almandine Physical Properties

Topaz and Almandine Chemical Formula

While comparing Topaz and Almandine 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 Topaz and Almandine chemical formula.

• Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
• Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Topaz and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Almandine Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.95-4.30 whereas that of Almandine is 3.95-4.30.