45 Oyster Shell Belt and Buckle Collection from Cellar Leather ideas Bivalve Reverb: Brass Oyster Shell Buckle & Strap from Narragansett Tortoiseshell Buckle Yellow Leather Belt Oliver Bonas Accessories Duxbury Bay Oyster Shell Buckle Cellar Leather. Slight variations in metal color may occur from one casting to the next. Each buckle is unique, custom cast and hand polished. Buckles are roughly 2 1 2" x 1 5 8". Coskata Oyster Buckles fit on a 1 and 1 1 4 belt