Amethyst Druse | Brasilien Fossils feather-like arms gracefully extend from

feather-like arms gracefully extend from the dense cluster of crinoids

From a geological perspective

vor etwa 71 Millionen Jahren

but it contains more iron oxide than any other variety of quartz

Amethyst Druse | Brasilien Fossils feather-like arms gracefully extend fromOrigin: Brazil Size: H38. 5cm W30cm D28cm Weight: 34. 3 kg Description: An amethyst geode with a hollow, concave shape, with gradients of dark purple amethyst. Additional Information: Amethyst is a transparent, coarse grained variety of the silica mineral quartz, prized for its purple color. Its physical properties are similar to those of quartz, but it contains more iron oxide than any other type of quartz, and experts believe its color comes from