mineral

Yellow-orange quartz (likely citrine or iron-stained quartz)

Quartz, silicon dioxide (SiO₂), colored by iron impurities or irradiation

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent to transparent, yellow-orange color, vitreous luster, no cleavage, conchoidal fracture, hexagonal crystal structure, specific gravity about 2.65. The rounded pieces appear tumbled or naturally water-worn, with some surface coating or iron staining.

Identified August 23, 2026More mineral →

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At a glance

Common name: Yellow-orange quartz (likely citrine or iron-stained quartz)
Scientific name: Quartz, silicon dioxide (SiO₂), colored by iron impurities or irradiation
Category: mineral
Identified: August 23, 2026
Method: Standard

AI Estimated Value

About $1–$5 for this type of mixed rough/tumbled material; attractive transparent natural citrine specimens may range from $20 to $200+.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids and igneous pegmatites; yellow coloration commonly develops from iron-bearing inclusions or heat treatment of amethyst. Quartz formed throughout geologic time, commonly in veins, cavities, and alluvial deposits.

Uses & applications

Used as gemstone material, ornamental stone, crystal specimens, abrasives, and industrial silica. Attractive transparent pieces may be cut or polished, though these appear mostly low-grade rough or tumbled material.

Geological facts

Natural citrine is relatively uncommon; much commercial “citrine” is heat-treated amethyst. Color zoning, internal fractures, and inclusions can help distinguish quartz from yellow calcite or glass.

Field identification & locations

Identify by its glassy luster, lack of cleavage, conchoidal fracture, and ability to scratch ordinary glass; calcite is softer and cleaves readily. Common sources include Brazil, Madagascar, Uruguay, and the United States.