gemstone

Mixed gemstone jewelry collection

Likely amethyst, rose quartz or pink tourmaline, smoky quartz, and dark tourmaline/onyx; exact identifications are uncertain from the image

AI-generated identification · may be incorrect

Visible stones are faceted and polished, with vitreous luster; the purple stone is likely amethyst, the pale pink stone may be rose quartz or tourmaline, and the brown-gray stone likely smoky quartz. Quartz hardness is 7 Mohs; tourmaline is 7–7.5; specific gravity commonly ranges from about 2.6–3.3.

Identified August 16, 2026More gemstone →

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At a glance

Common name: Mixed gemstone jewelry collection
Scientific name: Likely amethyst, rose quartz or pink tourmaline, smoky quartz, and dark tourmaline/onyx; exact identifications are uncertain from the image
Category: gemstone
Identified: August 16, 2026
Method: Standard

AI Estimated Value

Approximately $20–$300 for common costume or estate pieces; fine authenticated gemstones in precious-metal settings may range from $500 to several thousand dollars.

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

These are natural mineral gemstones cut and mounted in metal jewelry; quartz and tourmaline formed in hydrothermal veins or granitic pegmatites, commonly from Paleozoic to younger geological settings.

Uses & applications

Used primarily in jewelry and ornament, with value determined by species, color, clarity, cut, size, treatment, and metal setting.

Geological facts

The central dark rectangular cabochon could be black tourmaline, onyx, obsidian, or another opaque stone; visual identification alone is unreliable. Purple amethyst owes its color mainly to iron-related defects and irradiation.

Field identification & locations

Look for quartz’s glassy luster and hardness, tourmaline’s elongated prismatic crystals and strong pleochroism, and agate-like banding if present. Common sources include Brazil, Uruguay, Madagascar, Afghanistan, and the United States.