Our opal choker necklace is handmade with natural Welo opal gemstones in 14K gold filled and sterling silver. Perfect for the bride looking for a dainty minimal style to compliment her wedding dress. Opals were mined in the Wollo Province of Ethiopia and have lots of dancing color play. Goes with any occasion dressed up or down. Opals are the birthstone for October. * For Free Christmas gift wrapping just enter "Give it a Wrap" in the notes section at checkout. About Ethiopian Opal: Ethiopian opal was discovered in the early 1990's. The opal found in the cliffs of Wegel Tena in the Wollo Province of Ethiopia was discovered by farmers in 2008 along horizontal layers of volcanic rock. Opals have “play of color” which is created by the light reflecting off of silica spheres in the stone. They can display a variety of colors when turning the stone at different angles. Each opal is unique in the colors they display, the vibrancy, and hues of color. Opals also differ in the patterns of color dispersion across the stone such as pinpoint (or pinfire), mosaic, flame, and peacock patterns. Materials: Ethiopian Welo opal gemstones 3-5mm smooth rondelles All metal components are 14K gold filled, 14K rose gold filled, or 925 sterling silver If you have any questions just click "message seller" on our homepage. Thank you for visiting our jewelry shop, Linda and Joe .