mineral

Dyed or coated quartz/amethyst specimen (likely)

Quartz, SiO₂; purple portion may be amethyst, iron-bearing quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; vitreous luster; translucent purple and vivid pink-red coloration; no obvious cleavage, with conchoidal fracture. The unusually saturated colors and sharp color boundary strongly suggest dye, paint, or surface coating rather than natural coloration.

Identified September 9, 2026More mineral →

Explore Dyed or coated quartz/amethyst specimen (likely) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids in veins and cavities, commonly during igneous activity; amethyst develops its purple color from iron-related defects and irradiation. The red/pink treatment is likely modern human processing, so geological age cannot be determined from the image.

Uses & applications

Natural amethyst is used in jewelry, ornaments, and mineral collecting; treated pieces are mainly decorative or sold as inexpensive curiosities.

Geological facts

Amethyst is the purple variety of quartz, while quartz is one of Earth’s most abundant minerals. Artificially colored quartz is common in souvenir and metaphysical markets.

Field identification & locations

Check for color concentrated in cracks, pits, or one surface, which indicates dye or coating; test hardness cautiously on an inconspicuous area, since coatings can scratch or peel. Common sources of amethyst include Brazil, Uruguay, Zambia, and Mexico.