Who can say whether amethyst protects against drunkenness or if moonstone and rose quartz can boost fertility? Whether you believe in the metaphysical properties of gemstones and crystals, most of us ...

Crack open an unassuming stone, and you might just uncover a little conclave of crystals within. Their walls are glittering with quartz, amethyst, or calcite, protected by a hard shell that was shaped ...