The Joyful Jewel is Mariah Wheeler's shoppe name for showing Dancing Prisms, her book "Art at Last", and a few greeting cards. Dancing Prisms are brilliant mobiles with 25 - 50 prisms that spray color all around them. Mariah delights in making them, enjoying every aspect and sense that make up the dance. Each is unique and around 19" from top to bottom. They hang from a wooden ring, chain and a swivel hook.