gemstone

Mixed quartz gemstone bead bracelet

Quartz, silicon dioxide (SiO₂), in varieties including smoky quartz, amethyst, rutilated quartz, and possibly tourmalinated quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; vitreous luster; mostly translucent to opaque rounded beads in black, brown, gray, golden, and clear tones. Quartz has a trigonal crystal structure and indistinct cleavage; golden needle-like inclusions are likely rutile, while dark inclusions may be tourmaline or iron oxides.

Identified September 7, 2026More gemstone →

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At a glance

Common name: Mixed quartz gemstone bead bracelet
Scientific name: Quartz, silicon dioxide (SiO₂), in varieties including smoky quartz, amethyst, rutilated quartz, and possibly tourmalinated quartz
Category: gemstone
Identified: September 7, 2026
Method: Standard

AI Estimated Value

Approximately $15–$80 for a typical mixed quartz bracelet; $100–$250 or more if beads are exceptionally clear, strongly rutilated, or made from verified rare material.

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

Natural quartz formed in hydrothermal veins and cavities, generally in igneous or metamorphic settings; ages vary from millions to billions of years. The beads are human-cut and polished, not a single geological rock.

Uses & applications

Used primarily as jewelry, ornamental stone, and a collectible gemstone item. Common varieties are widely available and mainly valued for color, clarity, and inclusions.

Geological facts

The golden hairs in some beads are characteristic of rutilated quartz; smoky colors commonly result from irradiation and aluminum-related defects. Black beads may be black quartz, tourmalinated quartz, or another dark mineral, so exact identification requires testing.

Field identification & locations

Identify by glassy luster, hardness, conchoidal fracture, and lack of fizz; a steel file should not easily scratch quartz. Common sources include Brazil, Madagascar, China, and the United States.