Moss Agate Tumble Polished

Description

Moss agate is found in countries across the world, including India, Brazil, Uruguay, central European countries, and the United States. In the U.S., Montana moss agate is found in the alluvial gravels of the Yellowstone River and its tributaries between Sidney and Billings, Montana. It was originally formed in the Yellowstone National Park area of Wyoming as a result of volcanic activity. In Montana moss agate the red color is the result of iron oxide and the black color is the result of manganese oxide.

The gemstone has also been known as “Mocha stone” after the Arabian city of Mocha in Yemen, once a source.