gemstone

Smoky quartz ring

Smoky quartz, SiO₂, set in a metal ring; the photo alone cannot confirm whether the stone is natural or treated.

AI-generated identification · may be incorrect

Typically brown to gray-brown, transparent, vitreous, and trigonal; Mohs hardness 7, with no cleavage and conchoidal fracture. The pictured stone is faceted and mounted in a decorative setting.

Identified September 26, 2026More gemstone →

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At a glance

Common name: Smoky quartz ring
Scientific name: Smoky quartz, SiO₂, set in a metal ring; the photo alone cannot confirm whether the stone is natural or treated.
Category: gemstone
Identified: September 26, 2026
Method: Standard

AI Estimated Value

Approximately $20–$200 for many silver-set smoky-quartz rings; finer stones, precious-metal settings, or branded pieces can cost more.

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

Typically brown to gray-brown, transparent, vitreous, and trigonal; Mohs hardness 7, with no cleavage and conchoidal fracture. The pictured stone is faceted and mounted in a decorative setting.

Formation & geological history

Quartz forms in silica-rich igneous and hydrothermal environments; smoky coloration commonly results from natural irradiation affecting trace aluminum in the crystal. Quartz deposits span many geological ages.

Uses & applications

Used in jewelry and ornamental objects; quartz is also widely used in glassmaking and electronics.

Geological facts

Smoky quartz’s color can range from pale gray-brown to nearly black, and some commercial stones are irradiated to deepen or produce the color.

Field identification & locations

Look for glassy luster, hardness near 7, and lack of cleavage; common sources include Brazil, Scotland, Switzerland, and the United States. Gem testing is needed to distinguish natural smoky quartz from treated quartz or other look-alikes.