These tumbled African abalone shell pieces come in 1 kilogram (2.2 pound) bags. The pieces are 1 to 2 millimeters or 0.04 to 0.08 inches. There is some minor color variation from bag to bag and piece to piece as these are natural products. They are great for use in terrazzo flooring, swimming pool finishes, aquariums, terrariums, gardens, floral decorations, and of course, jewelry. If you want to drill the abalone shell pieces, we recommend drilling them in water with a drill press. We do not...