Van Cleef & Arpels’ 18K Yellow Gold Diamond and Turquoise Perlée Couleurs Ring is a rare treasure! The star of the show is a darker turquoise stone bookended by rows of beading and 0.29 carats of twinkling round diamonds. In very good condition with a box and certificate, it has hairline scratches. The combination of 18K yellow gold and cool blue turquoise is simply enchanting!