PERIOD BIGELOW KENNARD & CO. PLATINUM 3 CT SAPPHIRE BROOCH: One oval shaped, bezel set, native cut sapphire, approx. 3.00 Ct., Rated SI2 in clarity (Type II), slvB in Hue, 6-7 in Tone and 4 in Saturation. With 32 old European round cut diamonds, approx. total 2.00 Ct., rated SI in clarity, and I-J-K in color. The diamonds are bead set. Filigree and miligrain detail. Approx. 3 1/4'' in length. Signed: Bigelow, Kennard & Co. (Boston). Weight: 12.0 grams. Est. $3500/4000**