Opal ombré tennis necklace

Draped in eighteen-karat gold plating over a brass foundation, this tennis necklace celebrates the dreamy, shifting palette of opal - those colors that seem to change their minds depending on the light and your mood. At fourteen inches with a two-inch extender, it's the kind of piece that works whether you're feeling generous with your neck or prefer a little breathing room. Wear it and feel inexplicably pleased with yourself.