Back to all Boulder opal and off-set diamond DFR-OPAL-02 A beautiful boulder opal set in 18ct yellow gold with a single round brilliant cut diamond highlight. POA Enquire about this piece Enquire about this piece Close Please enable JavaScript in your browser to complete this form.Name *Email Address *TelephoneMessageSend Message Send to a friend? Related Pieces Boulder opal and yellow gold POA Opal with yellow and white gold £4,020 Boulder opal and diamond solitaire POA Boulder opal and a marquise £3,125