Fine Jewels And Watches May 2017
拍品 1904:
Set with an octagonal step-cut Paraíba tourmaline, to shoulders with brilliant-cut diamonds, to the plain hoop, mounted in 18K white gold, Paraíba tourmaline weighing approximately 2.55 carats, ring size 5½
Accompanied by a report from the Gemological Institute of America, stating that the approximately 2.55 carat natural Paraíba tourmaline is bluish green color, originates from Brazil, report no. 1237961940, dated 18th October 2016
This copper and manganese bearing tourmaline may be called "Paraíba tourmaline" in the trade. The name "Paraíba" comes from the Brazilian locality whe…
