Black Agate Agate is a variety of banded chalcedony formed from microscopic crystals of quartz.The name Agate comes from the river Achetes in Sicily, now known as the river Drillo, whereAgates were found.Another member of the chalcedony family isJasper.The differences between the two are that Jasper has less regular patterns and are general opaque.This is because Jasper is made of microscopic grains of crystalline quartz and agates containstranslucent bands made up of microscopic fibers of crystalline quartz called drusy. For more information on Agates.....
