Gatsby Jewellery Ltd has dated this Art Deco Sapphire Ring to the 1930s.
96 carat and displays a distinct colour change: blue in daylight, purple in incandescent light. The stone is rubover set in platinum and surrounded by 39 eight-cut diamonds. Decorative scroll work in the gallery leads to a slender platinum shank.

Accompanied by a report from Gemmological Certification Services (GCS) stating the sapphire shows no indication of heating, and is Sri Lankan (Ceylon) in origin.
Cut – Oval cabochon cut sapphire and eight-cut diamonds.

Clarity – The sapphire is eye-clean. The diamonds are VS1 to VS2.
Carat – The sapphire is approximately 11.96, with an approximate diamond weight of 0.39 carat.
Circa – 1935.
Size – M 1/2 (UK) or 6.25 (US). Complimentary sizing is available, can go up or down.
Measurements – The sapphire is 14.10 x 10.30mm. The head of the ring is 18.9 x 15.5 and sits 8.6mm from the finger.
Weight – 6.15 grams
Metal – Platinum. Tested.
Gatsby Jewellery Ltd has dated this Art Deco Sapphire Ring to the 1930s.
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