mineral

Polished pink-orange agate/jasper fragment

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; translucent salmon-orange body with white banding, waxy to vitreous luster, cryptocrystalline structure, and no obvious cleavage. The dark brown-black area may be iron/manganese oxides or attached matrix.

Identified August 22, 2026More mineral →

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At a glance

Common name: Polished pink-orange agate/jasper fragment
Scientific name: Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions; exact identification is uncertain from the image
Category: mineral
Identified: August 22, 2026
Method: Standard

AI Estimated Value

Approximately $5–$25 for a small common fragment; $30–$100+ if strongly banded, attractively polished, or from a documented locality.

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

Forms when silica-rich groundwater fills cavities in volcanic rock, depositing layered chalcedony over long periods, commonly during the Cenozoic or older volcanic episodes. Typical sources include Brazil, Uruguay, Mexico, Madagascar, and the western United States.

Uses & applications

Used for cabochons, carvings, beads, lapidary pieces, and ornamental objects; similar material is also sold as carnelian or orange jasper.

Geological facts

The translucent orange portion resembles carnelian, while visible pale banding suggests agate; the specimen may be a mixed agate–jasper piece rather than a single named variety.

Field identification & locations

Look for curved or parallel chalcedony bands, waxy luster, and hardness sufficient to scratch glass; a streak test should be white. Acid produces no reaction, distinguishing it from calcite; locality and polishing may be needed for a firm name.