Bismuth Rainbow Crystal Staircase - 1.792" devonian measuring at about the size

measuring at about the size of a large dog

Velociraptor mongoliensis - Velociraptors had three large sickle-shaped claws on each hand

Robert Bruce Horsfall

8 cm) long and 4

09" fossil fragment of the Dimetrodon's iconic spine

Bismuth Rainbow Crystal Staircase - 1.792" devonian measuring at about the sizeBismuth 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. 792". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to