This edition of the Prisma #10 embraces darkness and light on a different level. While all the stones are black, the jade disc is matte, while the onyx teardrops are polished and faceted. The jade disc might show some slight streaks, because this is a natural stone of course, and it's part of its personality. The hanging measures a total of 20" long and about 1.6" wide (the width of the crystal). The stone section measures about 5 inches in length. The chains and ring for hanging are brass. You can place your Prisma anywhere, and as long as there's direct sunlight hitting it, your space will fill up with tiny little rainbows everywhere.