mineral

Raw citrine quartz point

Quartz, SiO₂; yellow coloration likely from iron impurities or heat treatment

AI-generated identification · may be incorrect

Mohs hardness 7; transparent to translucent pale yellow-orange, vitreous luster, hexagonal crystal structure, and conchoidal fracture with no prominent cleavage. The specimen appears rough and naturally terminated or broken, with possible surface coating or staining.

Identified August 19, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids in cavities of igneous rocks and veins; natural citrine commonly forms in late-stage pegmatites and geodes. Its exact geological age and locality cannot be determined from the photograph.

Uses & applications

Used as a gemstone, lapidary material, ornamental crystal, and collector specimen; attractive transparent pieces may be faceted or polished.

Geological facts

Natural citrine is relatively uncommon; much commercial “citrine” is heat-treated amethyst, often producing deeper orange tones and reddish bases.

Field identification & locations

Identify by glassy luster, hardness, quartz-like fracture, and lack of cleavage; acid does not react. Common sources include Brazil, Madagascar, Uruguay, and Zambia, but laboratory testing is needed to distinguish natural from treated citrine.