Vintage tourmaline solitaire ring. Set vertically with a rectangular emerald-cut natural tourmaline in an open back rubover setting with an approximate weight of 10.00 carats, to a bold geometric design featuring polished edges and fancy shape open backholing, flanked by integrated ridged shoulders and tapering through to a solid flat shank. Tested white gold and yellow gold, indistinct stamp to the inside of shank, Italian, circa 1970.
