This Navratan works on the basis that the colour of the selected Gem correspond closely with the main energy points of the body known as chakras. When the vibrations within a gemstone are in harmony with the particular vibrations of the wearer, they complement each other. This will then ensure a state of well being. You would be free from ailments and a healthy body would have a healthy mind, which is the key to sucess in this world. This would not only suffice the requirement of your body but also would make your sub conscious mind more powerful. THE NINE GEMSTONES ARE RUBY, BLUE SAPPHIRE, EMERALD, CAT'S EYE (CHERYSOBERYL), HESSONITE GARNET, PEARL, ZIRCON AND CORAL THIS RING IS MADE IN STERLING SILVER