This bracelet is made from China Grade AA Gray Green Maifan gemstones. Maifan stone was used for therapeutic purposes in ancient China. As a result, it has come to be called “an amulet for improving health luck.” TO MEASURE YOUR WRIST: You will need a flexible measuring tape OR something flexible to wrap around your wrist & a ruler (See example in pictures). Wrap the measuring tape around your wrist, making sure to wrap it all the way around your wrist. We suggest measuring your wrist in the area you ultimately wish for your bracelet to sit. Gray Green Maifan Beaded Bracelet