Bismuth Rainbow Crystal Staircase - SOLD 1.999" book Crinoids are an incredible group

Crinoids are an incredible group of aquatic animals that attach themselves to the seafloor and filter feeds with beautiful feathered arms

It had its choice of options when devouring prey: swallow them whole with its massive mouth or tear them apart with its reinforced jaws

and involving brines from late Devonian and early Permian marine sediments

this was a rich environment along the Western Interior Seaway where Alamosaurus grazed

84" in length

Bismuth Rainbow Crystal Staircase - SOLD 1.999" book Crinoids are an incredible groupBismuth 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. 999". While bismuth's practical uses are limited beyond some pharmaceuticals, the element's utterly unique colors and shape continue to