Top tips from David Boyce and his class, who have cultivated a 3kg single copper sulfate crystal A classic school experiment involves growing copper sulfate crystals. Allowing water to slowly ...

When it comes to crystals, uniformity is the name of the game. A good crystal has a consistent structure, shaped by the repeating pattern of its atoms. But that doesn’t mean there wasn’t plenty of ...

Going back through time, cultures around the world—from ancient Sumer to Indus Valley, China, and South America—have believed crystals could evoke a kind of sorcery, conjure change, and heal disease.