Been talking with some friends about this recently, and I can't find any kind of answer. What is the "bead" made of? (bead in quotes because I've found no info saying it definitely is one.) Based on the color and shape of it, we've generally agreed that it's likely made of turquoise, and assuming it is torus with a large radius of 5cm, small radius of 2cm, and a density of 2.8g/cm^3 (that of a relatively dense turquoise sample), it would only weigh ~1lb. If you have any other thoughts on what it might be, I'd love to discuss, or if you have a source of actual canon for it, that'd be great as well.