A natural pearl and diamond necklace, Theodore B. Starr, circa 1912. Photo courtesy Bonhams.

comprising seventy-one off-round graduated pearls, measuring approximately 8.60 x 9.36 to 4.50mm., completed by a rectangular-cut diamond clasp; signed T.B. Starr, with original case; diamond weighing approximately: 1.15 carats; clasp mounted in platinum; length: 17 1/4in. Sold for US$ 74,500 (€53,930) 

Accompanied by GIA report #2145846776, dated August 1, 2012, stating: predominantly natural pearls, saltwater, no indications of treatment.

Bonhams. Fine Jewellery New York. 15 Oct 2012 - www.bonhams.com