mineral

Tumbled honey-yellow quartz/chalcedony, possibly dyed

Microcrystalline quartz (SiO₂), likely chalcedony or quartz with iron-oxide coloration

AI-generated identification · may be incorrect

Mohs hardness 6.5–7; translucent yellow-orange body, vitreous to waxy luster, cryptocrystalline structure, and no visible cleavage. The rounded shape is mechanically tumbled; vivid color may be natural iron staining or enhancement.

Identified August 14, 2026More mineral →

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Physical properties

Formation & geological history

Quartz precipitates from silica-rich fluids in cavities, veins, or volcanic rocks; chalcedony commonly forms in geodes. Such material can range from ancient Precambrian to relatively young deposits, depending on source.

Uses & applications

Used as inexpensive lapidary material, cabochons, beads, carvings, and decorative stones; generally low commercial value unless unusually clear, patterned, or naturally colored.

Geological facts

Yellow coloration commonly results from iron oxides or hydroxides, while heat or dye treatment can intensify orange tones. A glassy appearance and lack of cleavage distinguish quartz from many softer yellow minerals.

Field identification & locations

Commonly found in Brazil, Uruguay, Madagascar, India, Mexico, and the United States. Test cautiously with a steel knife or glass: genuine quartz should resist scratching steel and scratch ordinary glass; dye may concentrate in cracks or pores.