mineral

Unidentified pale yellow-green mineral/rock fragment

Possibly sulfur-bearing mineral, serpentine, or weathered limestone; exact identification requires testing

AI-generated identification · may be incorrect

Irregular, dull to weakly translucent yellow-green piece with earthy texture and no clearly visible crystals. Hardness and specific gravity cannot be determined from the image; test streak, hardness, and reaction to dilute acid.

Identified September 20, 2026More mineral →

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At a glance

Common name: Unidentified pale yellow-green mineral/rock fragment
Scientific name: Possibly sulfur-bearing mineral, serpentine, or weathered limestone; exact identification requires testing
Category: mineral
Identified: September 20, 2026
Method: Standard

AI Estimated Value

About $1-$10 as an unidentified fragment; substantially more only if testing confirms a desirable mineral or gemstone.

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

Could form through hydrothermal alteration, weathering, or sedimentary mineral precipitation; geological age is indeterminate from appearance alone.

Uses & applications

No reliable industrial or jewelry use can be assigned without identification; attractive pieces may have minor collector value.

Geological facts

Color alone is insufficient because several minerals—including sulfur, green calcite, serpentine, and iron-stained materials—can look similar.

Field identification & locations

Check whether it scratches glass (Mohs >5.5), leaves a colored streak, reacts with vinegar or hydrochloric acid, or has a sulfurous odor when gently rubbed; avoid heating unknown specimens. Common possibilities occur in altered volcanic rocks, carbonate deposits, and weathered ultramafic rocks.