mineral

Likely tumbled pale-green mineral specimen

Indeterminate; possibly serpentine, calcite, or pale jade/nephrite

AI-generated identification · may be incorrect

Opaque cream-to-pale-green, matte to weakly waxy luster, fine-grained appearance, and rounded rectangular shaping. Hardness cannot be determined reliably from the image: calcite is Mohs 3, serpentine 2.5–4, and nephrite 6–6.5.

Identified August 15, 2026More mineral →

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At a glance

Common name: Likely tumbled pale-green mineral specimen
Scientific name: Indeterminate; possibly serpentine, calcite, or pale jade/nephrite
Category: mineral
Identified: August 15, 2026
Method: Standard

AI Estimated Value

Approximately $1–$10 as an unidentified small specimen; confirmed ornamental serpentine or calcite may be $5–$30, while authenticated quality nephrite can range from $20 to several hundred dollars.

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

The specimen appears cut or polished from a natural mineral, but its geological origin and age cannot be established visually. Serpentine forms by hydrothermal alteration of ultramafic rocks; calcite commonly precipitates in veins and sedimentary settings; jade forms in high-pressure metamorphic environments.

Uses & applications

Small pieces may be used for carving, lapidary practice, décor, or collecting; only confirmed high-quality jade has substantial jewelry value.

Geological facts

The block-like shape and uniform surface may also indicate a processed mineral sample rather than a natural crystal. Identification requires hardness, streak, specific-gravity, and possibly refractive-index testing.

Field identification & locations

Check translucency, streak, and hardness: calcite scratches easily and fizzes in dilute acid, serpentine is softer with a waxy feel, while nephrite is notably tough and resists scratching. Common source regions include Italy, the United States, Canada, China, and New Zealand, depending on composition.