Bismuth Rainbow Crystal Staircase - SOLD 1.55" rockinaboxxiphactinus similar in appearance to a

similar in appearance to a stingray but with thorns along its body for added protection

often time by sediment-laden groundwater

clean it with rubbing alcohol prior to returning it to the jar

The keratin from the claw has worn away over the years

82" polished Phylloceras fossil from Madagascar

Bismuth Rainbow Crystal Staircase - SOLD 1.55" rockinaboxxiphactinus similar in appearance to aBismuth 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