Measurement instructions: All bracelets are made in size ranges. Please measure your wrist and choose the size range closest to your size before adding the item to your cart. For an exact measurement, use a measuring tape. Make sure the measuring tape is firm around the base of your hand. Alternatively, you can use a string or strip of paper. Wrap it around your wrist, and use this length to measure against a ruler. Sizes displayed are in inches. Natural properties of the stones in this bracelet: African Opal: This is a calming, soothing and purifying stone. It encourages emotional healing and activates and stabilizes the heart chakra. It can cultivate creativity, insight and inspiration. Ebony Wood: It is believed that this wood amplifies magnetic energy and it’s revered as the most powerful and protective of wood types. Ebony is a symbol of protection and power, due to its dark color.