MUSEUM QUALITY GEORGIAN STYLE DIAMOND AND PEARL PENDANT / BROOCH: Ca. 1879. 18K white gold and sterling silver brooch pendant centering a 7 mm cultured pearl nestled above 53 old mine cut and 20 round rose cut diamonds totaling approx. 4.00 Ct. of VS clarity and H-I-J color. Bar pin closure with detachable bail. The 15.5'' platinum chain is later. Platinum weight 1.7 grams. Gold/Sterling weight 9.5 grams. Sold with 2014 Atlanta Gemological GIA graduate's appraisal for $10,000.