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. Smokey Quartz: It gently neutralizes negative vibrations and is detoxifying on all levels, prompting elimination of the digestive system and protecting against radiation and electromagnetic smog. Smokey Quartz disperses fear, lifts depression and negativity. It brings emotional calmness, relieving stress and anxiety. African Opal: It is a calming, soothing purifying stone. It encourages emotional healing and activates and stabilizes the heart chakra. It can be used to see all sides of a situation and surmise a variety of possibilities. It can cultivate creativity, insight and inspiration. Red Sandalwood: Enhances meditation, increases the power of your wishes and stimulates a sense of awareness. Brings peace, relieves stress and mental traumas, helps to gain inner strength.