Stunning Purple Opalized Belemnite

Belemnoidea indet

Geological Time: Early Cretaceous, Aptian/Albian Stage

Size: Fossil is 26 mm long by 6 mm across on a 55 mm by 30 mm matrix

Fossil Site: Maree Formation, Coober Pedy, South Australia

Code: TUS20-29

Price: $695.00

Opalized BelemniteDescription: This specimen comes from Coober Pedy in Australia, a region renowned for its opal production. Indeed, Coober Pedy is known as the opal capital of the world. It is the alignment of the hydrated silica spheres which ultimately results in the rainbow effect of precious opal, the result of deflection and diffraction of light as it passes through the planes of hydrated silica molecules. The size of the spheres impacts the colors seen, with smaller spheres resulting in blues and larger spheres in reds. The predominant colors here are purple and blue. The opalized state is typical of what is found, and is a consequence of the fact that the back part of the shell, known as a guard or rostrum is the part of the organism subject to preservation, primarily due to infilling of a cast of the shell by silica. Many types of opalized fossils have been found, from individual dinosaur bones and belemnites, to entire opalized Plesiosaur skeletons valued in excess of a million dollars.

Fossils for Sale Information

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Opalized Belemnite
Opalized Belemnite

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