This is a crystal cluster of elemental Bismuth (Bi, 83). It shows beautiful iridescent colors and an interesting "hopper" or "ziggurat" shape. The make great paperweights and curios for display.
This specimen weighs 21 grams and measures approx. 31mm x 18mm.
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing the specimen shown. Your purchase will include an ID label.