i bought mine at my lqs along with the heat wand you use to attach them- i used them on my granddaughter's (Ashley's Ocean) quilt- she has had the quilt for 4 years now, it's been washed numerous times (she was 12 when she received it) and not a single crystal has fallen off. follow the instructions and they are quite easy to attach and are permenent...my lqs sold many different colors, sizes & shapes.