Vintage ruby and diamond cluster ring. Set to centre with an oval old cut natural unenhanced Siam ruby in an open back claw setting with an approximate weight of 1.80 carats, encircled by two stepped rows of round brilliant cut diamonds in open back claw settings with an approximate combined weight of 0.70 carats, and alternated by a single row of inward tapered baguette cut diamonds in open back claw settings with a combined weight of 1.00 carat. The total approximate diamond weight is 1.70 carats, to a ballerina cluster design featuring curving claws, a structured linear gallery and open backholing, leading to inwardly tapering shoulders and flowing smoothly down to a solid flat shank. Tested white gold, circa 1970, accompanied by Gemmological Certification Services (GCS) report #81288-67 and The Gem & Pearl Laboratory report #07865.
