PLATINUM AND 3.85 CTW DIAMOND BROOCH: Circa 1910-1918. 3.85 CTW old mine cut diamonds. Rated SI1-SI2 in clarity and I-J-K in color. 18K white gold bar pin. Weight: 8.4 grams. 2'' in length. Sold with current GIA appraisal, $8,500 Retail Replacement Value. Est. $5500/7000**