Mother Nature"s Gift of 60 Million Years Toxins Trapper & Cleanser 100% Natural Dietary Supplement Good for Both Hot and Ice-TeaMaifanite is weathered granite, diorite comprised of plagioclase, black mica, quartz, hornblende, chlorite, etc. It is packed with minerals. Japanese call it "longevity stone" while Koreans called it "medicine stone." Chinese have used it for many centuries to maintain good health. Modern research found that it may trap and remove microorganisms and heavy metals like lead, cadmium, chromium, arsenic, mercury, etc, from the human body. It is cardiatonic, liver nurturing and may help support immunity and maintain a healthy cholesterol level.