This appealing Bracelet showcases 2 strands of New Mexico Black Jet. Jet is a type of lignite, a precursor to coal, and is a gemstone. Jet is not a mineral, but rather a mineraloid, as it is a product of high-pressure decomposition of wood from millions of years. (In Whitby, England, Jet has been mined that came from the Jurassic era about 180 million years ago.)  Our Jet is from Acoma, New Mexico. The 8mm Stones have a smooth, silky sheen, and are near-round in shape with just a hint of rounded beveling. Jet is a fairly lightweight material — similar to Amber — so it offers substance without heft. The Black Jet is combined with vivid blue 6-by-12mm Turquoise Barrel Beads, with black matrix that echoes the Jet. The Stones are highlighted by six 8mm Oxidized Sterling Silver Rounds, adding subtle sparkle. The Bracelet is finished with a Sterling Silver Toggle Clasp and adored with a "SWD" Sterling Charm. The piece weighs 21 grams and is 8 inches long. Wear this Bracelet with its matching New Mexico Black Jet, Turquoise and Sterling Silver Necklace for double the impact.