Unique on Etsy!  This is a beautiful necklace with a stunning Royal Blue coloured lab created genuine sapphire centre stone!  ''Hand made 3-carat eq. (7*9 mm) Royal Blue emerald cut lab created sapphire pendant, halo design with diamond simulants, comes with chain. '' When we first saw the finished sapphire cut we were over the moon! Our lab grown sapphire has the same chemical composition (mineral corundum), optical appearance and physical characteristics (Mohs scale 9) as top quality natural s Sapphire Jewelry Necklace, Physical Characteristics, Blue Emerald, Blue Sapphire Necklace, Mohs Scale, Halo Design, Silver Jewelry Necklace, Halo Pendant, Sapphire Pendant