gemstone

Amethyst and mixed gemstone bracelet

Amethyst: purple quartz, silicon dioxide (SiO₂); likely accompanied by other quartz or decorative mineral beads

AI-generated identification · may be incorrect

Visible beads are polished, translucent purple-to-blue stones with vitreous luster; amethyst is Mohs hardness 7, trigonal crystal structure, no cleavage, and specific gravity about 2.65. Exact identification of the darker and blue beads requires close examination.

Identified September 8, 2026More gemstone →

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At a glance

Common name: Amethyst and mixed gemstone bracelet
Scientific name: Amethyst: purple quartz, silicon dioxide (SiO₂); likely accompanied by other quartz or decorative mineral beads
Category: gemstone
Identified: September 8, 2026
Method: Standard

AI Estimated Value

Approximately $10-$60 for a common polished bead bracelet; higher-quality natural stones or designer workmanship may reach $100-$300.

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

Amethyst forms when iron-bearing quartz crystallizes in cavities of volcanic rocks, commonly basalt, through hydrothermal fluids; most deposits are Cenozoic to Precambrian in age. The bracelet is human-processed by cutting, drilling, and polishing.

Uses & applications

Used primarily in jewelry and ornamental objects; quartz is also important industrially in glass, electronics, and abrasives. Bracelet value is mainly determined by bead quality, color, treatments, and craftsmanship.

Geological facts

Amethyst’s purple color results from irradiation and iron-related defects in quartz and can fade with prolonged strong heat or sunlight. Common sources include Brazil, Uruguay, Zambia, and Namibia.

Field identification & locations

Identify amethyst by its purple color, glassy luster, hardness, and lack of cleavage; it should scratch glass but not be scratched by a steel knife. This is not classifiable as igneous, sedimentary, or metamorphic because it is a mineral assemblage in jewelry.