Other beads were made from ochre, amazonite, or ostrich eggshells. The name Tianhe comes from amazonite. Deposits of feldspar, mica and amazonite are known, but they have not been developed. Amazonite beads were made into a teardrop shape. The gem varieties of potassium feldspar, amazonite and moonstone are variant colored perthites. The Amazonite Chakra stones are used for healing the issues related to throat Chakra. Amazonite is a mineral of limited occurrence. Amazon stone, or amazonite, is a green variety of microcline. According to Strabo and Pliny, the Garamantes quarried amazonite in the Tibesti Mountains. Amazonite is now known to occur in various places around the globe.