The Moss Agate is renowned for the resemblance of creeping moss or some other bluish-green vegetation. The sea green to dark forest blue tones are the variety of chalcedony (Quartz family), and is often found as fragments from weathered volcanic rock formed in fissures or as pebbles rather than in traditional agate layering. These spreading moss-like dendritic additions seen in the Moss Agate are mostly manganese or iron oxides and the coloration varies depending on the trace amounts of minerals or metals present (such as chrome). The Moss Agate's alternative name is Mocha, and comes from the Arabian city of Mocha in Yemen, an ancient source for this agate. It is chiefly found in India, Brazil, Uruguay, central Europe and the western United States. In Britain, during the late 18th century, Moss Agate was commonly regarded as a good luck charm. It was also viewed as a stone of agriculture among gardeners and farmers. It's said European farmers once used to hang the stone from trees and around the horns of oxen when plowing to encourage successful harvests. Moss Agate is perfect for those who have strong aggression or overly nurturing emotions. It helps to balance male and female energies whenever they become too extreme. Moss Agate brings us closer to nature and it disconnects from the chaos of modern society. It cleanses and stabilizes the aura, eliminating and transforming negativity. It enhances mental function, improving concentration, perception and analytical abilities. It soothes and calms, healing inner anger or tension and creates a sense of security and safety.