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 1920s.

The necklace is in very good antique condition; we've found no chips or cracks to any of the stones except a few little nibbles around the edges of the largest blue stone when seen under magnification.
Length: Approximately 16 inches (40cm), with a further two inch (5cm) drop for the pendant section.
Weight: 19.1g.
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Corvidae Antique has dated this piece to the 1920s.
Hand picked jewellery from a friendly family business
You can view the stock and full dealer information on the Corvidae Antique Profile Page