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Black Plume Agate Doublets showcase one of the most dramatic expressions of plume agate available, pairing a thin slice of natural black plume agate with a stabilizing backing layer to create a finished cabochon that is both structurally sound and visually stunning. The inky black base of this material makes the feathery, branching plume inclusions appear to float in deep space, producing a striking contrast that photographs beautifully and commands attention in any finished piece.
Plume agate forms when mineral-rich fluids seep through cavities in host rock over millions of years, depositing delicate, feather-like growths of manganese oxide or other minerals in frozen suspension within the silica matrix. The doublet construction enhances the translucency of the agate layer while giving the stone the depth and durability needed for wire wrapping and silversmithing, ensuring a secure, long-lasting set in any design.