Each bracelet carries a very specific energy: Peach Aventurine: a stone of prosperity, often recommended to help with anxiety, worry, stress and shyness. It can boost the energy of the sacral chakra and calm and balance the emotions. Mentally, Aventurine encourages tolerance, stabilizes the mind and promotes creativity. Lava Stone: said to alleviate anxiety, promote emotional tranquility and bring calmness and feelings of relaxation. Lava stone is supposed to have very powerful spiritual effects on the human mind. It's said to cleanse negative thoughts and emotions, as well as stimulate creativity. Elastic Materials: Semi-precious Cracked Quartz, Peach Aventurine, Titanium Lava Stones, and High-Quality Stretch Cord. Petite Size: approx. 6.5in. - 7in. Average Size: approx. 7in. - 7.5in. Plus Size: 7.5in. - 8in.