Montana Moss Agate Jewelry Pendant - 1
This beautiful and unique Montana Moss Agate is wrapped with 14k/20 gold fill wire.
Approximately 2 inches by 3 inches.
Moss agate (also called mocha stone) is a semi-precious gemstone
formed from silicon dioxide. It is a form of chalcedony which includes minerals
of a green color embedded in the stone, forming filaments and other patterns
suggestive of moss. It also sometimes resembles blue-cheese. The field is a
clear or milky-white quartz, and the included minerals are mainly oxides of
manganese or iron. It is not a true form of agate, as it lacks agate's defining
feature of concentric banding. Moss agate is of the white variety with green
inclusions that resemble moss. It occurs in many locations. The colors are
formed due to trace amounts of metal present as an impurity, such as chrome or
iron. The metals can make different colors depending on their valence.
Despite its name, moss agate does not contain organic matter and is usually formed from weathered volcanic rocks.
Montana moss agate is an agate found in the alluvial gravels of the Yellowstone River and its tributaries between Sidney and Billings, Montana. The agate originally was 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.