Unlike the shining opal that is famous in Australia, it is a "common opal" that does not shine. It's also called an artist's stone because it's soft blue, like a glazed pottery, it works on your creative sensibilities and has the power to develop your inner talent. Opal is also the birthstone for October. [Healing effect] Inviting good luck, enjoying life, working on creative sensibility, developing internal talent, supporting water related work, enhancing intuition and raising awareness ◯ size Stone size A. 29mm x 12mm (Total length 47mm) B. 30mm x 14mm (Total length 49mm) ◯ Material Earrings/brass Natural stone/Blue opal Origin/India ◯ Note The front surface is polished, but the back surface is not. If you would like to confirm, please let us know. We will send the photo as a personal message. Do not drop it from a high place or handle it roughly. The stone may crack. Everything is created by hand. Please purchase after understanding. We accept returns only for defective products.