Small Capiz Shells in Bulk, windowpane oysters, a white flat seashell, measuring approximately 1 inch. Our capiz shells for sale are round, flat, semi-transparent sea shells with a pearlescent appearance. They are used in making capiz shell chandeliers and capiz lampshades because of its striking appearance when light shines through. It is also used in making inlaid furniture, capiz shell trays, bowls, picture frames, capiz shell Christmas ornaments and more.. Many hotels feature capiz panels on the interior walls of their lobbies and hallways. You can also find capiz in the showers and bathrooms of many homes and hotels.Many hotels feature capiz panels on the interior walls of their lobbies and hallways. You can also find capiz in the showers and bathrooms of many homes and hotels.  The windowpane oyster is a bivalve marine mollusk in the family of Placunidae. They are edible, but valued more for their shells. The shells have been used for thousands of years as a glass substitute because of their durability and translucence