elegance of these handcrafted Sterling Silver earrings, featuring exquisite Natural Boulder Opals sourced from Australia, proudly stamped with the 925 mark. As a distinguished Natural Opal Type 2, Boulder Opal is organically attached to a unique host rock with a distinct chemical composition. Genuine Natural Australian Boulder Opals are comprised of SiO2nH2O silica, forming hydrated amorphous concretions from closely packed silicon dioxide molecules, filling the crevices of Boulder Opal ironstone. Exclusively found in select regions of Queensland, Australia, these opals are a rare and valuable resource, known to appreciate in value up to 15% annually. Rest assured, these earrings are free from artificial coloring or dyes, ensuring their natural beauty. Don't miss the chance to own these extraordinary earrings. All Australian Opal Cutters Jewellery and Loose Opal items are covered by our international warranty. Customize your purchase by informing us of any modifications, changes, or specific color preferences during checkout. Explore the possibility of upgrading or altering your opal for an additional charge. Please note that opals, with their vibrant play of colors, may differ from the online representation. Discover the natural allure of Australian Opal Cutters.