Stunning Antique Art Nouveau 2.70 Carat Diamonds Platinum 18K Yellow Gold Pendant Neckalce C.1920. The necklace has an amazing flowing design with yellow gold and diamonds set in platinum with a platinum chain. The pendant is set with a .65 carat old mine cut diamond in the center I color SI-1 clarity. The two old mine cut diamonds at the bottom are .30 carats each, there are 62 additional rose cut diamonds they average I color SI-1 clarity. Excellent Condition, Pendant measures 52mm high by 42mm wide.