Bismuth Rainbow Crystal Staircase - SOLD 1.17" volcanoes This specimen is a meticulously

This specimen is a meticulously prepared Knightia eocaena from Wyoming’s Fossil Lake

Challenger

also known as osteoderms

Above: Map of the Fossil Lake and the other Eocene lakes in the area imposed over a modern state and city map

This specimen is a beautiful polished Cleoniceras fossil from Madagascar

Bismuth Rainbow Crystal Staircase - SOLD 1.17" volcanoes This specimen is a meticulouslyBismuth is an element (Bi 83) best known for its unusual staircase shape, the result of bismuth atoms attaching to the edge of a rapidly growing crystal. This is called hoppering, when atoms are drawn to the edge of a structure, creating a lattice formation. This specimen is a Bismuth Rainbow Crystal, measuring 1. 17". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to