6332453 A Belle Epoque diamond and ruby ring, c.1893 (diamonds, rubies, platinum and gold) by Unknown Artist, (19th century); Private Collection; (add.info.: The marquise-shaped diamond within a calibre-cut ruby border to the split diamond shoulders and reeded hoop, mounted in platinum and gold, circa 1893 Provenance This ring was a wedding gift on 6th July 1893 to H.R.H. The Duchess of York (later H.M. Queen Mary) from her father-in-law, H.R.H. The Prince of Wales (later H.M. King Edward VII)); Photo by Christie\'s Images.