An opal cluster ring, comprising an oval cabochon of a precious opal with vivid spectral play-of-colour, approximately measuring 9.2 x 7.1 x 4.3 mm, encircled with twelve smaller round opal cabochons, between tapered shoulders, to yellow metal testing as 9ct, ring head 1.6 x 1.5 cm, size K, 3.0 grams.