Gatsby Jewellery Ltd has dated this piece to the 1920s.
The stone exhibits a slight colour change from blue in natural light, to bluish purple in incandescent light. Secured in a ten claw 18k yellow gold coronet collet, the sapphire sits between diamond set platinum shoulders to a slim platinum shank.
Accompanied by a sapphire report from The Gem & Pearl Laboratory stating the sapphire shows no evidence of heating, and is Sri Lankan (Ceylon) in origin.
Cut:? Cushion cut sapphire and eight-cut diamonds.
Colour:? The sapphire displays a slight colour change (blue in daylight, purple is incandescent light). The diamonds are G to H.
Clarity:? The sapphires is eye-clean. The diamonds are VS1 to VS2.
Carat:? The sapphire is 2.96 carat. The total approximate diamond weight is 0.10 carat.
Circa:? 1925.
Size:? N 1/2 (UK) or 6 3/4 (US). Free sizing available.
Measurements:? The sapphire is 9.6 x 6.7mm. Sits 5.6mm from the finger.
Weight:? 4.39 grams.
Metal:? Platinum, with the sapphire set in 18k yellow gold. Tested with a Niton DXL Precious Metal Analyzer.
Gatsby Jewellery Ltd has dated this piece to the 1920s.
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
Art Deco 2.96 Carat Ceylon Sapphire Solitaire Ring, Circa 1925
