gemstone

Amethyst ring

Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones

AI-generated identification · may be incorrect

Amethyst is typically Mohs hardness 7, vitreous luster, purple coloration from iron and irradiation, and trigonal quartz structure with no cleavage. The pictured stones are faceted and mounted in metal, so density and natural crystal shape cannot be assessed visually.

Identified September 8, 2026More gemstone →

Explore Amethyst ring in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Amethyst forms in silica-rich hydrothermal fluids, commonly lining cavities in volcanic rocks; major deposits are in Brazil, Uruguay, Zambia, and elsewhere, generally formed over millions of years. The jewelry setting and cutting are human-processed.

Uses & applications

Used extensively in rings, pendants, carvings, and mineral collecting; it is the traditional February birthstone. Commercial jewelry value depends strongly on color, clarity, cut, metal, and provenance.

Geological facts

Deep, evenly saturated violet with good transparency is most prized; heat treatment can produce yellow citrine or alter color. Amethyst is the purple variety of quartz.

Field identification & locations

Identify it by its purple color, glassy luster, quartz-like durability, and lack of cleavage; gem testing is needed to distinguish natural amethyst from synthetic or glass. This ring appears to contain multiple oval and round faceted purple stones.