Shop men’s gemstone necklaces featuring amethyst, pearls, moonstone, lapis lazuli, tiger’s eye, opal, ruby, emerald, meteorite, amber, black onyx, sea shells and more. Crafted in sterling silver and antique-style brass, these handmade gemstone chains offer bold and timeless style. Find men’s silver gemstone necklaces, black onyx pendants, and lapis lazuli chains for a unique look.