Ludlamite and Sugilite Physical Properties
Specific Gravity
3.1-3.2
2.69-2.79
Cleavage
Vitreous, pearly on cleavage
Poor on {0001}
Mohs Hardness
3-4
5.5-6.5
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ludlamite and Sugilite Chemical Formula
While comparing Ludlamite and Sugilite 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 Ludlamite and Sugilite chemical formula.
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ludlamite and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ludlamite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ludlamite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Ludlamite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.