18x13mm Puffed Teardrop Russian Amazonite Top Drilled Gemstone Sold Singly Amazonite is a bright green and white striped variety of microcline feldspar. The name is taken from that of the Amazon River, from which certain green stones were formerly obtained but it is doubtful whether green feldspar occurs in the Amazon area. Amazonite is often cut and polished for use in jewellery.