A star ruby and diamond ring. Photo courtesy Bonhams.

centering an oval star ruby cabochon, with old European-cut diamond surround and shoulders; mounted in platinum;ruby weighing approximately: 6.60 carats; estimated total diamond weight: 1.95 carats; mounted in platinum; size 6 1/2. Estimate: US$ 12,000 - 15,000 (€8,800 - 11,000) (£7,500 - 9,400)

Accompanied by Gübelin Gem Lab report #13075243, dated July 29, 2013, stating the star ruby as: Burmese (Myanmar) origin, with no indications of thermal enhancement.

Bonhams. 17 Oct 2013 11:00 EDT New York. Fine Jewelry.