Lady's 18K Yellow Gold Cabochon Emerald & Diamond Necklace. Necklace Length: 17" Contains: One Oval Cabochon Shape Emerald. Weight Approx: 50.00ct, Color: Green, Origin: Colombia. Five Hundred Twenty-One Natural Round Brilliant Cut & One Hundred Eighteen Straight/Tapered Baguette Cut Diamonds. Weight Approx: 30.00cttw, Color: G-H, Clarity: VS / SI. This is a spectacular 50.00 carat natural emerald of museum quality. It would be safe to say that it is probably the largest emerald in the world of this quality that was placed into a piece of jewelry. It you have one bigger and more clear, let me know and I will remove this statement. When I called Mr. Paul Desatell at the Smithsonian Institute, he stated that he had never seen an emerald of this size. I might add that Mr. Desatell is a world renowned expert on gemstones. It was through his and my efforts that we got the 67.89ct Transvaal Diamond put into the Smithsonian. This piece of jewelry belonged to a most important Hollywood actress who is recently deceased. Her name will be released to a serious buyer. It was purchased by a dealer who might be interested in selling this piece for a small and quick profit. If there is any interest, please call Mr. Marcus and he will assist you: 800-442-7866. With this piece you are actually getting two pieces of jewelry. You are getting an 18k yellow gold diamond chain with hundreds of diamonds and an emerald brooch that is likewise loaded with perfectly matched diamonds. The emerald drop can be removed from the chain and used as a lapel piece. Or if your wife is viciously ostentatious, it could be contained in a ring. Again, any interest should be communicated to Mr. Carl Marcus.