Onyx Rectangular Cab with Recess
Black Onyx rectangular cabs, with recess for setting a gem or pearl.
These vintage cabs are new but unused stock from the 1970's.
Cut in Germany for cuff links. Some still have cutting medium in the recesses for setting other stones.
16.1 x 14.1 x 2.7 mm each approx These come in packs of two stones.