Specification: Material:Lava Color:Black Diameter of round pendant:4.2cm/1.65"(appr.) Size:(L)X(W)12X8X2cm /4.72''X3.15''X0.79"(appr.) Package included: 1 Set Quantum Pendant Features: Brand New and high quality. Made of lava material,strong, durable and have a little bit of magnetic field. Best for wearing as necklace, not only good for your health care but also bring a fashion look to you. It is also a good choice for gift. Benefits of the Quantum Pendant: 1. Promote blood circulation, improve metabolism; 2. Help more perfect nutrients and oxygen delivery to cells and eliminate toxins from the cells, no longer appears the phenomenon of cold hands and feet. 3. Blood thin global supply of energy and reduce viscosity, can reduce the risk of cardiovascular disease, heart attack and stroke risk. 4. Increase metabolism and promote detoxification and maintain a slim figure. 5. The parts of the body to relieve pain, tension and stiffness. 6. Prevent mental fatigue, to maintain Anshen; 7. Improve sleep quality. 8. Enhance mental concentration, help workers achieve better performance at work; Help students to remain calm during the examination, reduce anxiety and enhance attention when review. 9. The need to make long distance or driving people often feel more spiritual, will not feel tired or dozing. 10. The body to restore balance and strength, and enhance the flexibility of the body; 11. Action older more strength and balance, will not easily fall injuries. 12. Athletes such as golfers, can enhance physique, endurance and strength, showing better performance. 13. Enhance physical fitness, to maintain their youth, making the body more healthy, more dynamic. 14. Strengthen the body's bio-energy field to anti-anti-harmful electromagnetic waves 15. Protect the body from from around our computers, cell phones, electrical appliances, telecommunications towers and other electromagnetic waves damage the body to restore balance and coordination. 16. A steady supply of oxygen in the blood, activate blood cells; 17. Promote cell activity body, strengthen the immune system; 18. Energy stone can produce large amounts of negative ions, so that certain harmful gases and negative chemical reaction low harmful and harmless substances. Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.