This is a beautiful flat piece of Bloodstone. Black cotton cord adjusts from 19-21" with a lobster clasp. Item# NG3273 Stone measures 1" tall x 3/4" wide. It is believed that people wear or carry Bloodstone as an amulet of protection against threats or bullying, whether verbal or physical, and for guidance to withdraw when appropriate and the courage to confront when needed. Bloodstone increases mental clarity and aids in decision-making. It provides a mental boost when motivation is lacking, and can revitalize the mind and body if you are exhausted. This stone stimulates dreaming and heightens intuition. It is marvelous for increasing creativity and cultivating a project from the idea stage through to actualization. It also encourages blessings and prosperity. Bloodstone (Heliotrope) may be classified as a Jasper or Chalcedony variety of Quartz, and is usually a combination of the two. It is typically defined as a dark green Chalcedony with blood-like spots of Red Jasper or iron oxide inclusions.