Cabochon Plastic Round 18mm Black Unfoiled Low Dome

These vintage plastic low dome 18mm black flatbacks are a convex shaped, un-faceted with a smooth surface stone with an unfoiled flat back for mounting.
They can be used in a setting mount to create a brooch, ring, cuff links or centerpiece; use them with a seed bead stitched bezel, wrap them with wire or set them into polymer clay. Cabochons are not beads, and do not have holes.

Glue into an 18mm setting to frame the stone using an epoxy glue. e.g., Araldite shown in the statement earring example.

Alternatively set into a polymer clay and bake.

Origin: West Germany

Circa: 1960s