mineral

Honey-colored quartz crystal

Quartz (silicon dioxide, SiO₂), likely iron-stained or inclusion-rich citrine

AI-generated identification · may be incorrect

Typically Mohs hardness 7, vitreous luster, translucent yellow-brown color, conchoidal fracture, and no cleavage; quartz is trigonal but may appear massive or irregular. The specimen’s rough, glassy surfaces and amber coloration are consistent with quartz, though the photograph cannot confirm identity.

Identified August 31, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in hydrothermal veins, cavities, and igneous or metamorphic environments; yellow coloration may result from iron impurities, irradiation, or heating. The exact geological age and natural-versus-treated origin cannot be determined visually.

Uses & applications

Used for collecting, ornamentation, and gemstones; clear, attractive pieces may be cut or polished. Industrial quartz is important in glass, ceramics, electronics, and abrasives.

Geological facts

Citrine is the yellow variety of quartz, while naturally occurring citrine is relatively uncommon compared with heat-treated amethyst. Amber-like color alone does not distinguish quartz from resin or amber.

Field identification & locations

Test cautiously for hardness: quartz scratches glass but should not be scratched by a steel knife; it is much heavier and harder than amber or plastic. Common sources include Brazil, Madagascar, Uruguay, and the United States.