Bismuth Rainbow Crystal Staircase - 1.806" rockinaboxpeanutwood Both black and brown background

Both black and brown background color choices are available

This specimen is a single jaw fragment from Merycoidodon culbertsoni

The term “tephra” describes any fragment of rock ejected from a volcano during a violent eruption

66" handaxe/biface from North Africa and is dated to roughly 12

Bismuth Rainbow Crystal Staircase - 1.806" rockinaboxpeanutwood Both black and brown backgroundBismuth 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. 806". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to