Fabulous Mauboussin cocktail ring, Paris, circa late 1980s, masterfully crafted in solid 18K white gold with a high-polish finish and classic French elegance. Centered with a non-heated natural Ceylon (Sri Lanka) vivid blue sapphire in four prongs (oval step cut, 10.95 x 7.92 x 5.68mm; 3.58 ct) and surrounded by a brilliant French pavé of 200 calibrated round brilliant diamonds totaling approx. 3.00 ctw (F color, VS clarity). Weight 12.95g; size 7.5 (sizable); measures 23 x 16mm and rises 9mm. French hallmarked with eagle head, maker’s lozenge “PT,” serial no. 04556, and signed “MAUBOUSSIN PARIS 18KT 04556”. 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 Ring resizing or/and appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.