SEW ON * RHINESTONE GEMS * Acrylic Flat Back 15mm (5/8") assorteed jewel colors" /> SEW ON * RHINESTONE GEMS * Acrylic Flat Back 15mm (5/8") Acrylic Rhinestone Flat Backs with two holes for sewing on to fabrics. Color mix is completely random. A selection of lovely jewel colors. 100 gems in a random jewel color mix. Packs are random colors but all the same size gems.