Nr pcs: 10 pcs Tot Weight: 3,76 carat Size: 4,1 mm Shape: Round Color: Deep Royal Blue Clarity: VVS-SI Luster: 4 (Grading from 1-6) Certificate: EGL nr N3104, sealed Treatment: Untreated *NOTE!! This is rare material. Certified sealed untreated Quality Sapphire from probably Sri Lanka or Thailand. EGL or European Gemological Labratory is one of the biggest Lab´s in the world however not as respected as the famous GIA. Only this certificate would probably cost about $100 at the time it was produced in 1987. A "must have" for the true gem collector.