Description
Montana Agate
#270-1450
- Matched Pair, Pear Shaped Cabochons, 23.42cttw
- 11.61ct & 11.79ct
- 20 x 19.5mm
What is Montana Agate
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A variety of chalcedony quartz known for its translucent base (often gray, white, or brown) with striking inclusions.
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Inclusions are typically iron oxides (reds, oranges) and manganese oxides (black, brown) that form dramatic moss-like, dendritic, or plume patterns.
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Every stone is unique — no two patterns are alike.
Origin
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Found primarily in the alluvial gravels of the Yellowstone River and its tributaries in Montana.
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Not “mined” in the traditional sense — many pieces are river-tumbled and discovered in gravels, making it a naturally polished treasure of the American West.