Whether you know it or not, you encounter crystals in your everyday life quite regularly. Table salt, sugar and snowflakes are classified as types of crystals, as are many gemstones—including amethyst ...

Crystals are everywhere these days. From Instagram posts to your friend’s nightstand, they’ve become a key part of spiritual practices, self-care, and even home decor. But not all crystals come out of ...

So far in this series, pretty much every material we’ve covered has had to undergo a significant industrial process to transform it from its natural state to a more useful product. Whether it’s the ...

Above: A hexagonal (six-sided) snow crystal, classified as a stellar dendrite. This crystal was photographed with an Olympus TG-6 camera after it landed on the sleeve of the authors fleece jacket.

Whether you believe in their healing properties or admire their natural beauty, there have never been more places to buy crystals online. But finding high-quality sellers can be tricky. Crystals can ...