Gatsby Jewellery Ltd has dated this piece to the 1900s.

Cut – Cabochon opal with old mine cut diamonds.
Colour – The diamonds are G.
Clarity – The diamonds are clean to the naked eye.
Carat – A total approximate opal weight of 0.20 carat, with approximately 0.08 carat of diamonds.

Dated – 1901.
Measurements – From one outer opal to the other is 10.8mm. The ring is 7.4mm at the widest point and sits 2.3mm from the finger.
Size – L 1/2 (UK) or 5 7/8 (US). Complimentary sizing is available, can go up or down.
Metal – 18k yellow gold. Hallmarked.
Gatsby Jewellery Ltd has dated this piece to the 1900s.
Gatsby jewellery are a husband and wife team who have years of knowledge and experience in dealing in fine antique jewellery.
You can view the stock and full dealer information on the Gatsby Jewellery Ltd Profile Page