mineral

Polished amber-like chalcedony (likely carnelian or yellow jasper)

Microcrystalline quartz, SiO₂; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Translucent honey-yellow to brown, glossy vitreous luster, curved internal banding or flow-like inclusions, and no obvious cleavage; quartz hardness is about 7 Mohs and specific gravity about 2.6. The rounded, polished shape suggests a lapidary-cut specimen.

Identified August 20, 2026More mineral →

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At a glance

Common name: Polished amber-like chalcedony (likely carnelian or yellow jasper)
Scientific name: Microcrystalline quartz, SiO₂; exact identification is uncertain from the image
Category: mineral
Identified: August 20, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a small common polished piece; $30–$150 if unusually vivid, patterned, or confirmed as rare material.

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

Likely silica-rich chalcedony or jasper formed when groundwater deposited quartz in cavities or replaced volcanic/sedimentary material; ages vary widely, commonly Paleozoic to Cenozoic. If genuinely amber, it would be fossilized resin, but the appearance more strongly suggests a quartz aggregate.

Uses & applications

Used for cabochons, beads, carvings, ornamental objects, and mineral collections; jasper and chalcedony are also used as inexpensive decorative stone.

Geological facts

Strong internal banding and apparent translucency are typical of chalcedony varieties, while amber is much softer and lighter. A refractive-index, hardness, and UV test would distinguish them reliably.

Field identification & locations

Common sources include Brazil, Uruguay, India, Madagascar, Mexico, and the United States. Check for quartz hardness, cool stone-like feel, and density; amber may scratch easily with a steel point and often fluoresces blue-white under UV.