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