Druzy Quartz on Petrified Wood (Copy) c8c48496111d40937ffc7227723adde5 Ammonites are an extinct group

Ammonites are an extinct group of marine animals in the Cephalopoda class

Featuring an incredible mix of 3D reconstructions

the diversity was remarkably small

Scientists estimate the age of Shungite to be almost 2 billion years old

Colored sapphires are referred to as Fancy Sapphires in the gem trade

Druzy Quartz on Petrified Wood (Copy) c8c48496111d40937ffc7227723adde5 Ammonites are an extinct group35 million years ago quartz mineral fossilized the wood of dead roots and converted it into petrified wood. In this case, the former rings were opened and hollow spaces were formed on which the quartz crystal could grow. The site is no longer accessible and lies several meters below the ground water level in the Brown Coal Open Pit, Zwenkau, Leipzig, Saxony Germany.