Characteristics of the Stone Crack quartz is formed when the inside of the quartz ruptures due to gravity, and then further pressure causes it to miraculously recrystallize. Since ancient times, it has been treasured as a stone for warding off evil and bringing good luck. One of the powers of crack quartz is its ability to expel the evil spirits lurking within the body. It is also said that the cracks disappear each time it absorbs the owner's negativity, and there are reports that the cracks disappear while wearing it, eventually becoming ordinary quartz. We are now offering high-quality black crack quartz. This is a power stone bracelet using 10mm crack quartz beads. It has a simple design that makes it easy to match with any outfit. Inner diameter: Approximately 16±1cm. There is only one available, so please don't hesitate if you're interested. Shipping will be via Yu-Packet Mini, free of charge. Thank you very much.