Bismuth has such an intricate crystal structure one that no other crystal shares. The colouring of Bismuth is iridescent showing all colours of the rainbow, imparting a great shimmering especially in sunlight. It would make a great addition to any crystal collection and children love it because it is so unique.
It's a hard specimen to measure, but it is 15 in weight approximately 3cms in width and 2cms in length. Each piece of Bismuth is unique, so they may differ to the one in the picture.