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These nodules form as discrete rounded structures within volcanic basalt
The cabochon in this piece was selected after multiple evaluations and requires careful cutting due to natural internal stress patterns within the stone
Keweenaw Agate with a Feldspar Eye
highlighting the complex mineral history preserved within the specimen
requiring extensive detailing to achieve natural fungal structure at this scale
14k Gold Copper Replacement Agate Ring Copper Replacement Agate These nodules form as discreteThis ring is built around a Grade A copper replacement agate sourced from nodules found in the Keweenaw Peninsula region of Michigans Upper Peninsula. This material is considered high grade due to its structural clarity and color definition, but even at this level it remains unpredictable to work with. Internal fractures and mixed mineral zones are common, and many stones do not survive the full cutting and shaping process into a stable cabochon. The
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