Montana Moss Agate is found in the Yellowstone River and Valley mostly between Sidney and Forsyth, Montana, Agates are found in the alluvial gravels of both the present stream bed and in gravel terraces. 10 to 15 miles either side of the Yellowstone drainage. Montana Moss Agate is from the Pleistocene age (10,000 – 1,6000,000), they are nodules of gray, translucent chalcedony, can be found in many colors from dark (almost black) to brown to orange or green to clear. Once in a while a white opaic color is found which is called “iris”. The Montana Moss Agate is known for the dendrite (pictures of trees or moss) and ribbon effect (sometimes called Sergeant stripes) in a rock. Also, pepper rock is found that looks like sprinkles of pepper. This cab is sprinkled with pepper dots, with clear outer edge and a darker ban in the center. A fine example of Montana Moss Agate. This cab has such a glossy polish I could not get a picture from the front without getting a reflection of my camera len!
Size: 31.7mm X 31.3mm, Dome: 6.5mm
Weight: 8 grams