Korean Amethyst: Korean Amethyst is the best in the world. Amethyst naturally amplifies infrared rays.
Green Jade: Most commonly used gemstone in the world. Green Jade naturally amplifies infrared rays.
Black Tourmaline: Naturally emits negative ions which purify oxygen. Negative ions are also natural free radical scavengers or, "antioxidents".
Topaz: Generates strong infrared rays.
Quartz Crystal: Body purifier when stimulated by electriciy.
Tiger Eye: Used for disorders of the reproductive tract, diverticulitis constrictions, also colon, digestion and stomach problems; alleviates pain.
Elvan: It helps to discharge bodily waste through the deep effect of Far Infrared Rays. Excellent detoxifier.
Citrine: Its reputed properties are that it helps with digestive problems, stomach ailments, and circulation; also it activates the thyroid and stabilizes the mind.