This lovely handmade necklace features a natural Howlite gemstone set onto a sterling silver or gold filled chain. Howlite, a naturally white stone mixed with marbled gray, is said to be a calming stone that helps relieve stress and muscle tension, while reducing anger and the over critical mind. Each stone is natural and contains a variation of gray and white marbling. Some stones have a lot of marbling, while others are closer to solid white.GEMSTONE: Natural Howlite STONE SIZE: average 8mm METAL: 14kt Gold Filled or Sterling Silver MODELED SIZE: 16 inchesWe recommend measuring your neck to where you'd like the necklace to fall before purchasing. If purchasing as a gift, the adjustable size of 16-18 inches is a great size for the average woman.