A black opal signet ring, featuring an oval precious opal panel, translucent body with a dark background colour, exhibiting play-of-colour optical effect, ranging from green to purple, collet set to a tapered shank with carved cross-hatching patterns on shoulders, unmarked but tests as 18ct, ring head measures 13.4 x 11.1 mm, size M, weighs 8.8 grams.
Sold for £400
A black opal signet ring, featuring an oval precious opal panel, translucent body with a dark background colour, exhibiting play-of-colour optical effect, ranging from green to purple, collet set to a tapered shank with carved cross-hatching patterns on shoulders, unmarked but tests as 18ct, ring head measures 13.4 x 11.1 mm, size M, weighs 8.8 grams.