This necklace uses 40 crystals, each approximately 10mm in diameter. The transparent crystals elegantly adorn the neckline. Crystal is a natural stone that possesses the power to purify, cleanse, and harmonize all "Ki" (energy). It is loved worldwide as a natural stone that wards off evil and protects from danger, bringing all kinds of good fortune. It also enhances the wearer's potential, boosting motivation, decisiveness, creativity, and insight. Length (including clasp): approximately 43cm