14k Gold Copper Replacement Agate Ring Copper Replacement Agate A remarkable addition for advanced

A remarkable addition for advanced agate collectors

This pendant is set in solid sterling silver and finished to preserve the natural motion and depth of the original furnace glass without altering its internal structure

Keweenaw Agate with a Feldspar Eye

Size 7 can be sized to an 8

including a small but distinct area of copper banding

14k Gold Copper Replacement Agate Ring Copper Replacement Agate A remarkable addition for advancedThis 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