14K Opal Ring Vintage Australian Opal & Diamond Ring

14K Opal Ring Vintage Australian Opal & Diamond Ring Offered here is a natural Lighting Ridge Black Opal gem of specimen with a diamond halo set in 14K yellow gold. The cabochon displays incredible bright color flashes in any light! It is not a doublet or a triplet. Size 7. Approximately measures 3/4" (18mm) long by 1/2" (12mm) wide & sits 1/3" (8mm) high when worn. The opal measures 12 mm long by 7 mm wide and about 4 mm thick. Marked "NOW 14KP".