Metal Clam Shell Light Shade - made in the UK for Lamps and Lights Ltd

Library Double Adjustable Wall Light (813ADW) - The Limehouse Lamp

Vintage Gooseneck Metal Lamp Desk Light Baby Blue Clam Shell Sea

Various Double Arm Wall Light styles from - Lamps and Lights Ltd

Vintage Clam Shell Silver Resin Table Lamp Nautical Clam Sea

Capiz Shell Lamp

Laura Ashley Beca Large Pendant White Ceramic Antique Brass

The Shell Wall Light - Small - Soane Britain

Clam Shell Shade - UK

Lamp Shades: The Ultimate Buyer's Guide

Scallop,Clam & Glass Seashell Lampshade on Antique Lamp