POLISHED WHITE MOTHER OF PEARL SHELL. GORGEOUS WHOLE IRIDESCENT SHELL WILL BE BEAUTIFUL AS THE CENTERPIECE OF YOUR NEXT PROJECT. AVAILABLE IN 2 SIZES: LARGE - 3.5" X 3.5" OR SMALL - 2" X 2.5" (APPRROXIMATELY). NOTE: Please wear a mask or respirator when cutting or grinding paua/abalone shell. The dust created from grinding and cutting can be toxic if it gets into your lungs. We have disposable N95 rated masks for sale in the Tools section.