This listing features a beautiful natural Ethiopian opal ball in a 6.6mm sphere shape, showcasing a rainbow fire opal with bi-color/multicolor gemstone color. The opal exhibits a good cut grade and natural opalescence effect, making it perfect for jewelry making. Sourced from Ethiopia, this polished gemstone is eye clean and ideal for wholesale applications. With on-demand certification available, this unique piece is a stunning addition to any gemstone collection.