To make these naturally aromatic necklaces, you’ll need a few simple tools: an electric blender or a ceramic mortar and pestle, a saucepan (preferably glass, enameled, or–to make black beads ...

The bold, colorful Cleo Collar by jewelry artist Beth Farber is made of hand-woven 18k gold, black spinel and emerald beads with two large boulder peacock-colored opals as a centerpiece.