Clear Quartz is a great addition to your collection with it's strong healing energy, it will help to unblock good energy. It helps you raise your energy levels and also helps with concentration while unlocking memory. This bracelet is made with 10mm Clear Quartz. SIZING INFORMATION Please measure your wrist with a measuring tape to ensure the most accurate measurement. If you do not have a measuring tape, you can also use a string by wrapping it around your wrist and then cutting the piece of string. After you have your cut string, place it alongside a ruler and write down your measurement. To ensure a perfect fit, please had 0.5 inch to your wrist measurement, if you want a little room please add .75 inches to your wrist measurement.