For a long time we recognize the therapeutic properties of minerals. Indeed, these stones have beneficial effects on the energy system of human beings. There are four precious stones: diamonds, rubies, emeralds and sapphires. Aquamarine, tanzanite, Peridot, the stones of the sun and the moon, aragonite, armenite, Hematite, rose quartz, jasper, carnelian, sodalite, onyx etc... are semi-precious stones. The chevron and the miles-flowers etc... are pearls barter, they have served in triangular trade. The legs of glass beads are manufactured today.