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The foil square measures 2mm x 2mm
Whole - A complete vertebra
Mini Museum will help you break the cycle of boring holiday gifts
rex tooth infused with actual Tyrannosaurus rex fossil material
Astronauts tend to keep busy during their missions
Bismuth Rainbow Crystal Staircase - SOLD 1.920" mammal The foil square measures 2mmBismuth 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. 920". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to
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