mineral

Tumbled yellow-brown translucent stones, likely quartz/chalcedony

Quartz (SiO₂) or microcrystalline quartz (chalcedony); exact identification requires testing

AI-generated identification · may be incorrect

Pale honey to brown color, translucent, rounded/tumbled surfaces, vitreous to waxy luster, no visible cleavage, conchoidal fracture; quartz hardness Mohs 7 and specific gravity about 2.65.

Identified August 11, 2026More mineral →

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At a glance

Common name: Tumbled yellow-brown translucent stones, likely quartz/chalcedony
Scientific name: Quartz (SiO₂) or microcrystalline quartz (chalcedony); exact identification requires testing
Category: mineral
Identified: August 11, 2026
Method: Standard

AI Estimated Value

Approximately $1–$10 for small common tumbled stones; $10–$30 if confirmed as attractive natural citrine, agate, or high-quality chalcedony.

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

Pale honey to brown color, translucent, rounded/tumbled surfaces, vitreous to waxy luster, no visible cleavage, conchoidal fracture; quartz hardness Mohs 7 and specific gravity about 2.65.

Formation & geological history

Quartz and chalcedony form in silica-rich veins, cavities, and sedimentary environments through hydrothermal or groundwater deposition; the specimens were subsequently human-tumbled and polished.

Uses & applications

Used as inexpensive lapidary material, ornamental stones, jewelry, cabochons, and educational specimens; common pieces have little intrinsic value.

Geological facts

Yellow coloration may result from iron staining or inclusions. The image does not provide enough detail to distinguish citrine, yellow jasper, agate, or ordinary stained quartz confidently.

Field identification & locations

Commonly found in quartz veins, gravel deposits, and agate-bearing volcanic regions worldwide. A glass scratch test, streak test, and close inspection for banding or granular texture can help identify them; avoid damaging valuable pieces.