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: – Howlite (white): Known to reduce anxiety, tensions and stress. This stone can be used to facilitate awareness, encourage emotional expression and assist in the elimination of pain, stress and/or rage. – Black Onyx: This is a powerful protection stone that absorbs and transforms negative energy. It helps to prevent the drain of personal energy and it aids in the development of emotional and physical strength and stamina. – Quartz: Clear Quartz is known as the stone of power, and it amplifies any energy or intention. It also protects against negativity, it attunes to your higher self and helps to relieve pain. – Hematite: Grounding, helps to focus, absorbs negative energy and transforms it into positive energy.