It was listed by Corvidae Antique. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Corvidae Antique has dated this piece to the Georgian era.

The ring is in very good antique condition. We believe it was neatly converted many years ago, possibly from a bracelet or choker clasp.
Size: Q (UK), 8 (US), a large size. Can be resized, please ask for details.
The face of the ring measures 2.2 x 2.7cm and the shank is 2mm wide at the back. The top of the ring sits around 1cm above the finger.
Weight: 9.5g.
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Corvidae Antique has dated this piece to the Georgian era.
Hand picked jewellery from a friendly family business
You can view the stock and full dealer information on the Corvidae Antique Profile Page