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"Simply Sapphires-Blue Ceylon Sapphires, Untreated Sapphire, and Fine Colored Gems Australian Boulder Opal - 14.07 Carats - 27x13.2mm - A sharp piece of boulder opal we found at the Las Vegas gem show a few years back, and just found it in a bin in one of our safes. Great play of color. All gemstones in our inventory and our jewelry are "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.simplysapphires.com/others/australian-boulder-opal-14.07-carats-27x13.2mm>