Our larger tumble polished gemstone bits can be used for a variety of creative applications including home decor, jewelry and crafts. These small bits range in size from 12mm to 19mm (when measured along the longest length of each piece), however some pieces included in your order may be larger or smaller due to the nature of how the bits are sorted. For smaller sizes, see our BITS sizes #00, #0, #1, #2 and #3.