I made a right-angle weave collar with these and used the 5x3 alexandrite/gold roundels for a scalloped edge. In daylight, the necklace is rose-violet, but under artificial light, it's blue and golden. Great fun to surprise people with this effect--and I get two necklaces for the price of one!
Beautiful, but I wasn't expecting the color change to be that great. Still great beads though.