gemstone

Tumbled/cut citrine quartz point

Quartz, silicon dioxide (SiO₂), likely heat-treated amethyst sold as citrine

AI-generated identification · may be incorrect

Mohs hardness 7; transparent to translucent orange-yellow body with vitreous luster, conchoidal fracture, and trigonal crystal structure. The flat-polished sides and pointed termination indicate human shaping.

Identified September 2, 2026More gemstone →

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Physical properties

Formation & geological history

Natural citrine forms in silica-rich hydrothermal veins and cavities, while most commercial orange citrine is heat-treated amethyst; quartz crystallized in diverse igneous and hydrothermal settings over geologic time. Common sources include Brazil, Uruguay, Madagascar, and Zambia.

Uses & applications

Used as a decorative crystal, lapidary object, and inexpensive gemstone; occasionally set in jewelry. It has no major construction use in this form.

Geological facts

Natural citrine is relatively uncommon and typically pale yellow to smoky orange; strong orange coloration is commonly produced by heating amethyst. Color zoning or cloudy inclusions can help distinguish it from glass.

Field identification & locations

Identify by its glassy luster, hardness, internal veils/inclusions, and lack of bubbles; a quartz point should not scratch easily with a steel knife. Common retail specimens are from Brazil or Uruguay.