A 5x3mm oval white Australian Coober Pedy opal bracelet in rhodium over sterling silver measuring approximately 0.25 inch wide with box clasp - the gemstone bracelet whose stone origin is as compelling as its optical character. Coober Pedy in South Australia is the world's largest opal mining area, producing white opal renowned for its play-of-color: flashes of red, orange, green, and blue that shift as the stone moves. Each stone is unique - the variation between stones is the mark of genuine natural opal. Box clasp.