February's Birthstone - Amethyst
Amethyst is the birthstone for February and the Aquarius zodiac sign.
Amethyst broach, framed in gold, on a gold chain.
Amethyst is a form of quartz, composed of silicon dioxide which is the primary ingredient of sand. Most quartz samples are clear, but amethyst has a beautiful purple color due to small amounts of iron impurities in the crystal lattice.