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"A new genus of Dromaeosauridae (Dinosauria
Two Space Race specimens
changes in colors are directly connected to a change in the amount of iron present at a certain spot
13" slice of petrified wood from Arizona
it is a Nickel/Iron alloy so it is susceptible to rust should the coating wear off
Bismuth Rainbow Crystal Staircase - 1.518" quartz "A new genus of DromaeosauridaeBismuth 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. 518". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to
