Gatsby Jewellery Ltd has dated this piece to the 1960s.
The centre stone is secured in a four claw setting and surrounded by a undulated skirt of twenty-eight high white and bright tapered baguette diamonds, leading to a D-shaped platinum shank with Trilogy-split shoulders.

Accompanied by a ruby report from Gemmological Certification Services (GCS) stating the rubies show no indication of heating, and originate from Mozambique.
Cut – Oval cut ruby and tapered baguette diamonds.

Colour – Diamonds are E to F.
Clarity – Some visible inclusions in the ruby (this is common for rubies of this size). The diamonds are VS1 to VS2.
Carat – The ruby is a known 7.26 carat. The total approximate diamond weight is 2.96 carat.

Size – L (UK) or 5.5 (US). Complimentary sizing is available, can go up or down.
Measurements – The ruby is approximately 12 x 9.5mm. The head of the ring is 21.9 x 19mm and sits 9.9mm from the finger.
Metal – Platinum. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1960s.
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