Set in 18ct yellow gold, two pieces of boulder opal display spectacular large flashes of blue and green tones. An 18ct white gold section, housing five flush set round brilliant cut diamonds runs through the centre of the opals.

Set in 18ct yellow gold, two pieces of boulder opal display spectacular large flashes of blue and green tones. An 18ct white gold section, housing five flush set round brilliant cut diamonds runs through the centre of the opals.