33.9x17.1x6.4mm Handcrafted brass winding. Opal gemstone with iridescent colors. Opal gemstone, fossilized ammonite shell from 70 million years ago. Exported from Canada. Canadian national treasure gemstone. Internationally recognized gemstone. The seven colors of opal correspond to the seven chakras in the human body. Enhances personal confidence. Positive energy. Brings good luck and wealth. Improves interpersonal relationships/auspicious people.