A tourmaline and 18 carat gold ring by Rudolf Heltzel, the pink cabochon-cut tourmaline raised in a collet setting between a graduated arched surround, signed RH, ring size J
A tourmaline and 18 carat gold ring by Rudolf Heltzel, the pink cabochon-cut tourmaline raised in a collet setting between a graduated arched surround, signed RH, ring size J