Sapphire and diamond ring, 1920s. This ring centres on a gorgeous oval sapphire weighing 2.64 carats, of a mid violet-blue known as ‘Cornflower’, strongly associated with sapphires from Sri Lanka (Ceylon). In addition to its characteristic colour, this sapphire is notable for its clarity, the liveliness of its cut, as well as its rarity as an untreated stone, as Sri Lankan stones are often heated to improve their colour. Its setting is a perfect 1920s cluster, with a traditional surround of circular-cut diamonds, overlaid with scrolled shoulders at the sides to bring a touch of Art Deco geometry to the overall design.
French assay mark for platinum (dog’s head)
PLACE OF ORIGIN
DATE OF MANUFACTURE
Sapphire: approximately 2.64 carats, accompanied by GCS report no. 80246-09, stating that the sapphire measuring 10.0 x 7.4 x 4.8mm and weighing 2.64 carats, is of Sri Lankan (Ceylon) origin, with no indications of heat treatment.
Diamond: total carat weight approximately 1.25 carats, approximately H-I colour, VS clarity on average.
Very light wear consistent with age and use.
US: 6 1/4
Height of setting: 8mm
Dimensions of setting from front: 16.5 x 17mm
Gross weight 6.4 grams.