mineral

Tumbled blue quartz (likely dyed quartzite or blue aventurine)

Quartz, silicon dioxide (SiO₂); blue coloration may result from inclusions or dye

AI-generated identification · may be incorrect

Hardness 7, blue with whitish/cloudy patches, vitreous to waxy luster, granular crystalline structure, no obvious cleavage, specific gravity about 2.65. The rounded, glossy surface indicates tumbling and polishing.

Identified August 25, 2026More mineral →

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At a glance

Common name: Tumbled blue quartz (likely dyed quartzite or blue aventurine)
Scientific name: Quartz, silicon dioxide (SiO₂); blue coloration may result from inclusions or dye
Category: mineral
Identified: August 25, 2026
Method: Standard

AI Estimated Value

Usually $2–$10 for a single tumbled piece; approximately $10–$30 if unusually natural-colored or attractively patterned.

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

Quartz forms in igneous, metamorphic, and hydrothermal environments; the original material may be quartzite or quartz-rich rock. Geological age is specimen-dependent, and any blue dyeing occurred after extraction.

Uses & applications

Primarily sold as a decorative, lapidary, metaphysical, or inexpensive collecting stone; unsuitable for most jewelry requiring gem-grade clarity. Quartz is also widely used in glass, ceramics, electronics, and construction aggregate.

Geological facts

Natural blue quartz is uncommon; vivid, uniform blue tumbled stones are often dyed quartzite, while blue aventurine contains reflective blue mica inclusions.

Field identification & locations

Look for hardness sufficient to scratch glass, translucent edges, and granular quartz texture; dye may concentrate in cracks or surface pits. Common source regions include Brazil, India, Madagascar, and Africa.