A fire opal and diamond ring Set with a marquise-shaped rose-cut fire opal, within a brilliant-cut diamond surround, to open-work shoulders of foliate design, mounted in platinum, opal approximately 7.50 carats, diamonds approximately 1.10 carats total,...

Fire opal and coloured diamond 'tree' brooch Modelled as a tree, the trunk set with carved fire opal weighing approximately 12.50 carats, supporting the textured branches set with oscillating coloured diamonds, the leaves pavé-set with brilliant-cut diamonds...

Vonrüti design. Fire Opal and Petrified Coral Necklace. Yellow gold 750. Decorative, casual necklace of baroque fire opals, the centre set with 1 large, rounded coral-limestone disc of ca. 6.2 cm Ø, additionally decorated with 1 round, facetted fire opal...