145 CT AA - 15x Beautiful Natural Rough Boulder and Koroit Opals, from Queensland in Australia. Natural rough with beautiful multicolor fires. 100% Natural not Treated, Very solid. The measurements are approximately from 8 to 25 mm Weight: 145 CT / 29 g The opals in the photos are shown wet to show their potential when worked. In the last photos they are also shown dry. Each Natural Opal gem, is unique in the world for its incredible mix of colors and flashes, which are not replicable in any way, a guarantee that you own a unique gem in the world. ***All photos were taken using lamp light, with professional photographic lenses, to enhance the colors and also the details and imperfections of the gem. Looking with the naked eye, possible streaks, inclusions and imperfections are much less visible or not visible at all.*** AAA – See all my auction lots, if you win multiple lots, you only pay 1 shipping. IMPORTANT - You must wait for the end of all auctions before paying if you want Catawiki to combine the shipment automatically. What is an Opal? Opal is a unique gemstone renowned for its play-of-color, an optical phenomenon where flashes of vibrant colors, such as red, green, blue, and yellow, shift across its surface when viewed from different angles. This effect is caused by the unique internal structure of Opal, which diffracts light into its spectral components. Opals can range from translucent to opaque, with varieties like white, black, and fire opals showcasing different characteristics. It is believed to inspire creativity, awaken intuition, and foster emotional clarity. Whether worn as jewelry or cherished as a collector's piece, Opal holds a timeless allure that connects us to the wonders of the natural world. Composition: Hydrated silica. Origin: Most Opals come from Australia, with notable deposits in Ethiopia and Mexico. *SHIPPING* Shipping is always carried out with a tracking code, paying the utmost attention and care to the packaging of the object to preserve its beauty and current condition. The courier may vary according to the destination, if you wish to leave some specific instructions for delivery, kindly inform me as soon as possible, because shipments are almost always made the next morning. *SATISFIED BUYER* Angolo Vetusto is committed to bringing maximum professionality and transparency, always presenting original lots, full of detailed high definition photos and defining each object in detail in all its strengths and weaknesses. If there is a problem with the lot received or due to shipping (which does not depend on us), wait to leave negative feedback, WE are always committed to solving any problem due to the lot or shipping, contact us immediately and we will be happy to resolve every issue. We care a lot about satisfying every buyer and maintaining the utmost professionality. Always remember to leave POSITIVE FEEDBACK, if you are satisfied with your purchase, it is important for both buyers and sellers. Thanks, Happy Auction everyone!