Adularia and Howlite Physical Properties

Adularia and Howlite Chemical Formula

While comparing Adularia and Howlite 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 Adularia and Howlite chemical formula.

• Chemical formula of Adularia- KAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Adularia and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Adularia and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adularia and Howlite Optical Properties during the identification of gemstone. Specific gravity of Adularia is 2.45-2.58 whereas that of Howlite is 2.45-2.58.