This is an amazing platinum ring from the Art Deco era. The ring is centered with a gorgeous oval cut black opal. The center stone is accentuated by sparkling round and emerald cut diamond and emerald accents. The top of the ring measures 23mm by 16mm. The ring is stamped 10% IRID PLATINUM and weighs 6.2 grams. The ring is size 5 3/4 but it can be resized.