These are white beads with a colorful rainbow. They are 12x18mm in diameter. The hole is about 2mm. They are approximately 7.5mm thick at their thickest point.
Along with making beautiful jewelry, these could be used as mosaic tiles, adding a colorful dimensional element to your mosaic projects. As you can see from the photos, the beads are thicker at the bottom (the clouds) than they are at the top, so take that into consideration for mosaics.
