Amethyst Crystals

About

Looking for a specific amethyst? Cathedral, geode, matched pair, or a custom size. Submit a sourcing request → Amethyst is a variety of quartz (silicon dioxide, SiO2) colored by trace iron impurities (Fe3+) within the crystal lattice, activated by natural gamma irradiation from surrounding rock. The result is that signature violet-to-deep-purple hue, ranging from pale lavender to near-opaque royal purple depending on iron concentration and how long the crystal was exposed to radiation during formation. It sits at Mohs 7, making it one of the most durable quartz varieties available. Like its relative citrine , amethyst belongs to the macrocrystalline quartz family. Both form in silica-rich hydrothermal environments, and understanding their shared origin is worth reading about in our natural vs heat-treated guide . Every amethyst crystal for sale on Crystals.com is hand-selected directly from family-run operations in Brazil and Uruguay. We evaluate each piece for color saturation, crystal termination quality, and structural integrity. Nothing is dyed, heat-enhanced, or synthetically treated. Whether you are drawn to sculptural amethyst towers , looking for wearable amethyst jewelry , or hunting for a raw geode specimen, every piece on this page arrived here the same way: sourced by hand, chosen on merit. Free shipping on all orders over $150. About Amethyst What separates a truly exceptional amethyst from an ordinary one comes down to a handful of factors: color depth, color zoning, crystal termination, and the geological conditions of its formation. The finest specimens show rich, saturated purple concentrated at the crystal tips, with gradual zoning toward the base. Sharp, well-defined terminations indicate undisturbed growth, which is the mark of a stable hydrothermal environment over time. Brazilian amethyst tends toward lighter lavender tones with larger, more open crystal formations, prized for their dramatic size and architectural presence. Uruguayan amethyst r