An opal and diamond pendant necklet, Anson, Gold Coast. The centrepiece a large opal crystal of estimated weight 98 carats, in a pave diamond frame, and set either side with a matte finished freeform yellow gold panel and a white gold openwork freeform panel, all hung on a white gold omega. Estimated total diamond weight 3.50 carats.18ct yellow and white gold. Weight 144.9 grams