Bismuth Rainbow Crystal Staircase - 1.675" britishhistory This material is set into

This material is set into a resin strip and attached to an informational card with the Mini Museum Seal of Authenticity

The geologic sample has been cast in resin and affixed to an informational card with the Mini Museum Seal of Authenticity

In the Roman Empire

The Hell Creek Bundle captures two of the formation's most iconic dinosaurs: Tyrannosaurus rex and Triceratops

Bismuth Rainbow Crystal Staircase - 1.675" britishhistory This material is set intoBismuth 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. 675". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to