Material: Tourmaline 7mm Origin: Brazil Size: Approximately 7mm (±0.5mm) Wrist size: Approximately 15.5cm (elastic) Weight: Approximately 14g Features and Meaning: This is a fun type that collects various colors. It includes highly transparent ones, rare colors, and those that exhibit a cat's eye effect, making it recommended for accessory materials. Tourmaline is a natural crystal that originated on Earth over 10,000 years ago. Its transparent and beautiful crystals are the birthstone for October and are treasured as the gemstone of hope. It is the natural stone with the most color variations. The name "tourmaline" is said to be derived from the Sinhalese word "turmali," meaning "mixed colors." As the origin of the name suggests, it is a stone with a variety of colors. There are also tourmalines with dichroism, and some have multiple colors within a single stone. Item No. BG5804-7