Rosenquarz-Schale | Madagaskar Apophyllite This is an unusually large

This is an unusually large ammonite

coarse-grained variety of the silica mineral quartz

000 at an auction at Christie's in London in October 2020

and the last of them disappeared during the mass extinction event about 250 million years ago - making them one of the most successful species that ever lived

These layers are an Eocene lagerstätte

Rosenquarz-Schale | Madagaskar Apophyllite This is an unusually largeOrigin: Madagascar Size: H24. 5cm W53cm D40cm Weight: 31. 7 kg Description: Cut and polished in the shape of a bowl that has a rose tint. The floor is flat and can be displayed. Additional Information: Quartz has attracted attention from early times; Water clear crystals were known to the ancient Greeks as krystallos hence the name crystal or, more accurately, rock crystal, which was used for this variety. Quartz comes in virtually all colors.