SIGNED TIFFANY & CO. 18K YELLOW GOLD "HEDGEHOG" BROOCH DESIGNED BY JEAN SCHLUMBERGER. Pierced and finely detailed, with round ruby eyes. New, with original stamped suede case and blue Tiffany & Co. box. Accompanied by Tiffany & Co. appraisal certificate, November 2000. - L: 1 3/8 in. Estimate $750-1,000