gemstone

Colorless faceted gemstones, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂), trigonal crystal system

AI-generated identification · may be incorrect

Transparent to translucent, colorless, glassy luster, and conchoidal fracture; Mohs hardness 7, specific gravity about 2.65. The stones are cut and faceted, so natural crystal faces and cleavage are not visible; inclusions and cutting quality vary.

Identified September 12, 2026More gemstone →

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At a glance

Common name: Colorless faceted gemstones, likely quartz (rock crystal)
Scientific name: Quartz, silicon dioxide (SiO₂), trigonal crystal system
Category: gemstone
Identified: September 12, 2026
Method: Standard

AI Estimated Value

Approximately $2-$20 per small common faceted stone; $20-$100+ for larger, clear, well-cut natural quartz. Identification and value require testing and measurements.

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 crystallizes from silica-rich hydrothermal fluids and igneous pegmatites, commonly in veins and cavities from many geological ages. These specimens have been shaped and polished by human processing.

Uses & applications

Used as inexpensive decorative gemstones, jewelry accents, teaching specimens, and crystal collections. Faceted quartz generally has modest value unless exceptionally clear, large, or well cut.

Geological facts

The photograph alone cannot reliably distinguish quartz from colorless topaz, zircon, beryl, or synthetic glass. Quartz is piezoelectric and is widely used in oscillators and electronics.

Field identification & locations

Field identification requires a hardness test: quartz scratches ordinary glass but not readily with a steel nail; it lacks cleavage and has a typical SG near 2.65. Common sources include Brazil, Madagascar, the United States, and India.