Bismuth Rainbow Crystal Staircase - SOLD 1.55" rockinaboxxiphactinus Endeavour orbited Earth 4

Endeavour orbited Earth 4

The keratin from the claw has worn away over the years

This specimen is a large fragment of coprolite from the Two Medicine Formation in Montana

twice the size of the specimen in Age of Dinosaurs)

82" polished Phylloceras fossil from Madagascar

Bismuth Rainbow Crystal Staircase - SOLD 1.55" rockinaboxxiphactinus Endeavour orbited Earth 4Bismuth 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. 55". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to