Two styles of yoga bracelets, can be stacked together or worn separately! Black Sea Sediment Jasper, clear crystal Quartz and Rosewood Pearwood. *Sea Sediment is a gemstone of stability. It is said to be a powerful protection against negativity and it eases emotional stresses. *Clear crystal Quartz is known as the "master healer" and will amplify energy and thought, as well as the effect of other crystal. It absorbs, stores, releases and regulates energy.