Amethyst-Geode im Tischformat | Brasilien Fish Water-clear crystals were known to

Water-clear crystals were known to the ancient Greeks as krystallos - hence the name crystal or better rock crystal for this variety

Henry Fairfield Osborn introduced the world to the legendary T-Rex

The outer surface is almost entirely covered with petrified bark - a great rarity as the softer material rarely survives

50 Million Years Old

Amethyst-Geode im Tischformat | Brasilien Fish Water-clear crystals were known toOrigin: Brazil Size: H12cm W27cm D12cm Description: Cut and polished on one side to reveal the bed of dark purple crystals. Additional Information: Amethyst is a transparent, coarse grained variant of the silicon mineral quartz, valued for its purple color. Its physical properties correspond to those of quartz, but it contains more iron oxide than any other variety of quartz, and experts believe its color is due to its iron content.