Gatsby Jewellery Ltd has dated this piece to the 1910s.
Two rubover set old mine cut diamonds (and a small rubover set rose cut diamond) sit between the two main gems, on a sweeping shank featuring six (three each side) rose cut diamonds set in platinum, to a slim, fluted 18k yellow gold shank.

Accompanied by an independent jewellery report from IGR (#30309983).
Cut – The main diamond is an old pear cut. The two larger of the accent diamonds are old mine cuts. The remaining diamonds are rose cuts.

Colour – The pear cut is K. The remains diamonds range from G to I.
Clarity – The pear cut is VVS. The old mine cuts are SI1. The rose cuts range from VS2 to I1.
Carat – The pear cut is approximately 1.00 carat, with a total approximate diamond weight of 1.70 carat.

Circa – 1910.
Size – O (UK) or 7 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The diamond is approximately 8 x 5.6mm. The pearl is approximately 5.25 x 5.85mm. The ring is 17.35mm along the finger and sits 5.4mm from the finger.

Metal – 18k yellow gold. The diamonds are set in platinum. Tested.
Video – To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/737912371
Gatsby Jewellery Ltd has dated this piece to the 1910s.
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