Estate Superb Emerald & Diamond Necklace. Center Emerald is AGL Certified?11.46 ct. with Excellent cut & clarity, "one of the finest Emeralds full of life and?vibrant", the Diamonds on the 18k white gold necklace measure approx. 30 carats plus of F/G color & VS1 clarity. This Emerald is one of the finest gems we have seen in decades. Comparable?Gems have fetched $250K to $350K at auctions without the 30+ carats of Gem Diamonds. Inspection for serious buyers can be arranged.