Amethyst
Brazil, Zambia, Uruguay · 51 specimens · 26.2ct avg






Amethyst is the purple variety of quartz, colored mainly by iron and exposure to natural radiation. It ranges from light lilac to deep reddish purple, has Mohs hardness 7 and no cleavage, making it durable and widely used in jewelry.
Price History
Quality Tiers
Listings
Specimen Data
Value Drivers
Carat weight has a moderate effect on value: amethyst is abundant, but large, well-cut stones with rich, even color and minimal zoning can command higher per-carat prices than smaller, commercial-grade material.
Color is the primary value driver. Top-quality amethyst shows strong, saturated reddish purple or bluish purple with even distribution, minimal color zoning, and neither too dark nor too light a tone.
Most commercial amethyst is eye-clean, so buyers expect very good clarity. Noticeable inclusions, fractures or color banding reduce desirability, except where zoning is used deliberately for creative cutting.
Cut enhances both brilliance and color balance. Well-proportioned mixed or fantasy cuts that avoid extinction and highlight pleochroic directions are valued above flat, windowed or poorly symmetric stones.
Market Dynamics
Amethyst is mined in large volumes from Brazil, Uruguay, Zambia and other localities. While low- to mid-grade material is abundant, fine-quality crystals in large sizes are comparatively less common but still readily available.
Demand spans everything from low-cost beads to high-end designer jewelry. Its status as the most famous purple gemstone, wide availability and association with February birthstone marketing all support broad, global demand.
Recent Trends: steady demand from the broader jewelry market, with gradual growth in online and designer channels for well-cut, natural stones.
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Insights
Large geodes lined with amethyst crystals from Brazil and Uruguay feed both the specimen and decorative-object markets.
Zambian material often shows a slightly cooler, bluish purple color compared with the warmer hues typical of many Brazilian stones.
Heat treatment can lighten overly dark amethyst or convert some material to citrine or ametrine, so disclosure is important when color is altered.
Because quartz is abundant, amethyst is rarely synthesized for jewelry; most synthetic purple quartz is intended for industrial or experimental purposes.
High-volume production and cutting in Brazil, India, Thailand and China keep calibrated sizes readily available at low per-carat prices.
Amethyst continues to benefit from strong branding as a birthstone and as a 'spiritual' or meditation stone in metaphysical markets.
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