Koriot boulder opal patterns are formed through a fascinating geological process. They are essentially created when silica-rich solutions seep into cracks and fissures in sedimentary rocks, such as ironstone. Over time, these solutions solidify and form opal. The patterns and colors in the opal are determined by the size and arrangement of the silica spheres within the stone. This process can take millions of years and produces some of the most beautiful and unique gemstones in the world.
Nice tri=color Koriot Boulder opal with clean jelly opal band. 21X18.8MM 17.4 carats
Koriot Boulder opal 17.4 carats
All items will ship at USPS flat rate. Any orders over $100 will require additional insurance and a signature for proof of delivery. This is to protect your items and ensure damage or loss is covered.
Refunds must be requested within 10 days. Buyer will pay for return shipment including proper insurance if the value of items being returned exceeds standard flat rate insurance of $100. Items must be returned in the same condition purchased. A refund will be paid after the return is received.
Store silver in a soft bag. Polish with cloth made to clean tarnish from silver. Be aware strong chemical cleaners can damage delicate gems like opal. Sonic jewelry cleaners with warm dish soap are safer for stones however avoid using them on opals.