mineral

Tumbled quartz with a healed vein

Quartz (SiO₂), likely iron-stained massive quartz; the white seam may be calcite or quartz

AI-generated identification · may be incorrect

Hardness about 7 for quartz; translucent honey-yellow to tan, vitreous-to-waxy luster, massive granular texture, and no obvious cleavage. The central seam is a contrasting mineral-filled fracture, possibly harder quartz or softer calcite.

Identified September 13, 2026More mineral →

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At a glance

Common name: Tumbled quartz with a healed vein
Scientific name: Quartz (SiO₂), likely iron-stained massive quartz; the white seam may be calcite or quartz
Category: mineral
Identified: September 13, 2026
Method: Standard

AI Estimated Value

About $2–$15 as a common tumbled specimen; up to roughly $20–$50 if unusually attractive, large, or sold as a distinctive mineral specimen.

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

Formed when silica-rich fluids filled a fracture in older host rock, followed by weathering and tumbling/polishing; the specimen’s exact geological age cannot be determined visually. Yellow coloration commonly results from iron-oxide staining or included iron minerals.

Uses & applications

Used as a decorative tumbled stone, lapidary material, and collectible; quartz is also important in glass, electronics, abrasives, and construction aggregate.

Geological facts

Quartz is one of Earth’s most abundant minerals and has a diagnostic Mohs hardness of 7. A steel blade should not scratch the main body, while calcite in the seam would react weakly with dilute acid.

Field identification & locations

Common in hydrothermal veins, quartz-rich igneous rocks, and weathered gravels worldwide. Confirm with hardness, streak (white), and a close inspection of the seam; visual identification is not definitive.