gemstone

Amethyst chips

Quartz, purple variety (SiO₂)

AI-generated identification · may be incorrect

Mohs hardness 7; vitreous luster; transparent to translucent purple crystals with conchoidal fracture and no cleavage. The pieces appear polished or tumbled, with color caused mainly by iron impurities and irradiation.

Identified September 14, 2026More gemstone →

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Physical properties

Formation & geological history

Amethyst forms in cavities of volcanic rocks, especially basalt, where silica-rich hydrothermal fluids crystallize over geologic time, commonly during the Cenozoic. Major sources include Brazil, Uruguay, Zambia, and Namibia.

Uses & applications

Used in jewelry, ornamental objects, crystal collections, and lapidary products. Small chips such as these are commonly sold as decorative or craft material.

Geological facts

Amethyst is the purple variety of quartz and is the February birthstone. Heating can turn it yellow-orange, producing citrine or ametrine-like material.

Field identification & locations

Identify it by purple color, glassy luster, hardness near 7, and lack of cleavage; glass is softer and often contains bubbles. Strong color zoning, natural crystal faces, and inclusions support authenticity, though this image alone cannot confirm origin or treatment.