These are Resin Sea shells 2 types. the first type is 4.5x3x1.75 and approximately 3.25 oz and the second one is approximately 5x2.5x1.25 and approximately 2.2 oz. Each one is premade so will ship quickly. *Note: Resin products may contain small bubbles or inclusions and those are a natural part of the resin process. It adds to the handmade and uniqueness of each piece"