All black, all the time: Black diamonds, black pearls, onyx, black spinels, obsidian and blackened gold are just some of the materials turning up recently in fine jewelry creations.

Envisioned with 18-carat gold and jet-black obsidian, ... Expedition 33 Jewelry: Real-Life Necklace. Hannah Martin also hand-crafted 33 real-life sterling silver necklaces, ...