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 Edwardian era.

The brooch is not hallmarked but has been x-ray tested as sterling silver with a nine-carat gold bail (likely added later).
In excellent antique condition.
This listing does not include a chain but the pendant would look equally at home on a silver or gold necklace.
Size: 3.6 x 2.6cm (just over an inch wide), 4.2cm total drop. The moonstone itself measures approximately 2.2 x 1cm.
Weight: 10.3g.
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Corvidae Antique has dated this piece to the Edwardian era.
Hand picked jewellery from a friendly family business
You can view the stock and full dealer information on the Corvidae Antique Profile Page