Natural Australia Solid opal with diamond

1: KG227(not necklace included): 4.5cts Natural Australia Solid Opal 0.288cts Diamond 9K Gold Pendant 15.2ct \s
2: Opal pendant/necklace #213051:
Opal weight:3.6cts/1pc drop type,1.221cts/1pc oval
Diamond:0.237CTs(117pcs)
Main material(metal):AU750(18K Gold, 75% Gold)
Total weight(pendant&necklace):45.04cts
Pendant length:Approx. 62mm
Necklace length:Approx 45CM/18”
Necklace material:AU750(18K Gold, 75% Gold)