An early 20th century boulder opal and diamond brooch. The oval-shape boulder opal cabochon...

The lot is in good overall condition with scratches and small dents in keeping with general wear. The pin is slightly bent. The white metal shows considerable tarnish. The moulder opal contains many natural surface reaching fissures with some areas of matrix face-up. The opal displays a good play of colour with predominately green and orange colours and has some light surface scratches. The diamonds appear bright and well matched, estimated total diamond weight 0.20ct, individual diamonds are too small to accurately assess colour/clarity grades. Please see important notices in the front of the catalogue for coloured stones.