Sellaite and Ludlamite Physical Properties

Sellaite and Ludlamite Chemical Formula

While comparing Sellaite and Ludlamite 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 Sellaite and Ludlamite chemical formula.

• Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
• Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sellaite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.