DeNagy Stones - Ruby
Hardness = Cuts Glass = 9
Clarity = FL
Colour = "Pigeon Blood Red"
Refraction = 1.726-1.799
Specific Gavity = 4.00-4.03
Melting Point = 2940 degrees
Chemical composition = Cr3+ -Al2O3
Cost per carat = $150
DeNagy Stones - Sapphire
Hardness = Cuts Glass = 9
Clarity = FL
Colour = "Malaccan Blue"
Refraction = 1.766
Specific Gavity = 4.00-4.03
Melting Point = 2940 degrees
Chemical composition = Fe2+, Ti4+ -Al2O3
Cost per carat = $150
DeNagy Stones - Emerald
Hardness = Cuts Glass = 8
Clarity = FL
Colour = "Deep Columbian Green"
Refraction = 1.7576-1.578
Specific Gavity = 2.68-2.68
Melting Point = 2570 degrees
Chemical composition = Cr3 + Be3Al2Si6O18
Cost per carat = $150
DeNagy Stones - Diamond
Hardness = Cuts Glass = 9
Clarity = FL
Colour = D
Brilliance = Excellent = 7.40
Refraction = Superlative = 2.20
Dispersion = Excellent = 0.44
Porosity = 0.97
Chemical composition = C,O,S,Fe,Ni,Y,Zr,Hr,Gd
Cost per carat = $200