One platinum (tested) opal and diamond ladies' ring. This approximately 10 mm round white opal with orange and green flashes of color is surrounded by 16 diamonds, old mine cut, approximately 0.5 carats each for a total weight of 0.80 carats. There are 2 old mine cut diamonds, one set on either side at top of shank. Diamonds average SI to I1. The approximately 0.04 carats on each side of center are SI clarity. All of the diamonds average H-I color. Total weight of all diamonds is approximately 0.88 carats.