Rare Tiffany & Co. necklace, New York City, circa 1984–1990, handmade in solid 18K yellow gold and platinum with a high-polish finish. Centered by a vivid Brazilian rectangular step-cut aquamarine (15 x 20 x 6mm; approx. 24.21 ct, formula) in four-corner prongs, surrounded by 118 calibrated round brilliant-cut diamonds in pavé (approx. 2.36 ctw, E/F, VS). Two-section link chains with concealed push box clasp and figure-8 safety. Weight 81.95g; length 17.5"; centerpiece 26 x 31 x 9mm. Signed “©TIFFANY & CO. HANDMADE 18KT PLATINUM.” Includes vintage box, NY Times May 24, 1984 ad copy, and archive B&W photo. Excellent condition; stones secure. Very good conditions. All our diamonds and colored gemstones are naturally earth-mined. Any synthetic (lab-grown) stones will be clearly indicated in the description. Upon Request, Auction House may provide an appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.