I set this pendant with a round Coober Pedy opal. The stone has a cream-colured background and displays flashes of light green. It has a diameter of 1cm. The surrounding shoulders are slightly tapered, and the entire pendant is 2.9cm long and 1.5cm wide at its widest point. The back of the hanger is hallmarked for Edinburgh 2019. It is a reasonably dressy piece, but can eslily be worn every day.