Fine Jewels And Watches November 2018
Set with an oval black opal plaque, embellished by the openwork bombé surround with pavé-set brilliant-cut diamonds, to the three-quarter-hoop, mounted in 18K yellow gold, black opal weighing approximately 6.52 carats, diamonds weighing approximately 2.25 carats in total, ring size 6½
Accompanied by a report from the GemResearch Swisslab, stating that the approximately 6.52 carat natural black opal displays play of color (orange, red, green, blue and violet), originates from Australia and has no indication of treatments, report no. GRS2014-058659, dated 20th May 2014
