6.25ct Ceylon Sapphire & 3.75ct Diamond, Platinum Dress Ring c.1930

This is a stunning, fine and impressive 6.25 carat Ceylon sapphire and 3.75 carat diamond, platinum dress ring; part of our diverse antique jewellery collections This stunning antique sapphire dress ring has been crafted in platinum. The pierced decorated, cluster arrangement displays a stunning feature 6.25 ct cushion cut Ceylon* sapphire, collet set in relief to the centre of the design. The sapphire is encompassed with eighteen impressive individually claw set Old European round cut diamonds. The outer border of the surrounding setting is embellished with a further twenty claw set Old European cut diamonds, held within a scalloped edged design. The pierced scroll decorated, elevated ring shoulders blend with the main setting and meld with the plain ring shank at a subtle collared design. The outer surface of the shank is hallmarked with the Portuguese mark for platinum (seagull); this variation of mark denotes the piece was assayed in Lisbon. This stunning cluster ring is supplied with a sapphire report card and certificate supplied by the Gemmological Certification Services, London**, in addition to a diamond grading report card for the supporting diamonds. Notes: * Ceylon sapphires (mined only in Sri Lanka) are known for their unique colour, ranging from very pale blue to vibrant almost electric blue. The colours noted within Ceylon sapphires occur naturally and do not tend to be heat treated, the most sought after known as the cornflower blue. ** This documentation accredits the blue sapphire originating in Sri Lanka (Ceylon) and certifies that the gemstone shows no indications of heating; non-heated sapphires are a scarcity. Sapphire Quality Origin Sri Lanka Cut Cushion Content 6.25 carats Dimensions 15.20mm x 9.00mm x 4.80mm Diamond Quality Colour (average grades) H Clarity (average grades) Si2 Cut Old European Content 3.75 carats Date: Circa 1930 Origin: Lisbon, Portugal