gemstone

Amethyst and clear gemstone ring

Amethyst (purple quartz, SiO₂), likely set with colorless quartz or glass accents

AI-generated identification · may be incorrect

Amethyst is quartz with Mohs hardness 7, vitreous luster, trigonal crystal structure, and no cleavage; its purple color comes from iron-related impurities and irradiation. The image shows a polished, mounted jewelry specimen, so metal and accent-stone details cannot be confirmed.

Identified August 11, 2026More gemstone →

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At a glance

Common name: Amethyst and clear gemstone ring
Scientific name: Amethyst (purple quartz, SiO₂), likely set with colorless quartz or glass accents
Category: gemstone
Identified: August 11, 2026
Method: Standard

AI Estimated Value

Approximately $20–$150 for a common silver or plated ring; $150–$500+ if it contains a valuable precious-metal setting or high-quality natural stones.

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 mainly in cavities of volcanic rocks when silica-rich hydrothermal fluids cool, commonly in basaltic geodes; deposits range from old Precambrian to younger volcanic settings. The ring is human-processed and assembled jewelry.

Uses & applications

Used extensively in rings, pendants, beads, carvings, and mineral collections; quartz is also important industrially. Jewelry value depends on color, transparency, cut, metal, and workmanship.

Geological facts

The best amethyst is strongly saturated purple with reddish flashes and even color. Heat treatment can turn some amethyst yellow, producing citrine.

Field identification & locations

Identify by its purple color, glassy luster, hardness, and lack of cleavage; a scratch test should be avoided on jewelry. Common sources include Brazil, Uruguay, Zambia, and Bolivia.