Australian Natural Boulder/Koroit Opal Necklace. Absolutely Beautiful ,,Iridescent Flashes of stunning colour throughout this entire Necklace with a fantastic mixture of Patterned Koroit Boulder Opal and Winton area Boulder Opal Beads ,136 Freestyle shaped beads size from 5mm to 9mm with a length from end to end of 48cm....All Natural 100% ....From Boulder Rough to Highly Polished Beauty Just For YOU !!!!!.Free Postage Express within Australia....International Express $40.00 AUD which Guarantees a Quicker Delivery time.!