Arts and Crafts Mission style Steuben art glass shade with a 3.75" aperture; height 5.5". https://ficklemoonantiques.com/product-category/art-glass-shades Art glass shades including Quezal, Steuben, Tiffany, Durand and Lustre are for sale at Fickle Moon Antiques.
Sold** Quezal art glass shade with gold, silver and pink iridescence; ribbed with a large bell-formed body. The diameter wide point is approximately 14"; prodigious aperture at 4.75". Early 1900's; signed on the fitter rim.