Boulder opals all have different shapes, so artisans often craft them by hand to match the stone, resulting in beautiful, artist-made designs. This opal features a gradient of navy blue with fluorescent green and blue that shimmer in diagonal lines. Small diamonds and emeralds add a touch of elegance around it. Markings: K18WG 3.25 (Opal) E 0.07 (Emerald) D 0.09 (Diamond) As this is a pre-owned item, please refrain from purchasing if you are sensitive to such matters. 27-00. Ring Size: 12 Stone: Diamond