The spirit of innovation applied to age-old glassmaking techniques is what makes Favrene a real rarity today. As with many handmade glasses, Fenton's Favrene isn't a recent invention. It is Fenton's unique version of two earlier glasses - Tiffany's Favrile and Steuben's Blue Aurene. Enticed by the silvery blue color found in these pieces, Frank M. Fenton worked to develop a similar color. A special reheating process was necessary to create the silvery layer on the outside of each piece. Favrene was introduced in the Fenton line in the 1991 Connoisseur Collection and continues to be a collector favorite.