Entry
CommercialPrice index97.0▼ 0.8% qtr
Q1 2025Q2 2026
Example grade (e.g.)Brazil / MadagascarLight to medium purpleHeated · SI clarity< 5 ct
Market band$3 to $11 / ct
The Gemius IndexAME
Amethyst
Four market segments for amethyst, Entry to Investor. Each shows its price index, market band and an example grade. Refreshed every quarter.
By market segment
Where a amethyst lands depends on its origin, colour, clarity, treatment and size.
Mid
GoodPrice index102.0▲ 0.5% qtr
Q1 2025Q2 2026
Example grade (e.g.)Brazil / BoliviaStrong purpleVS clarity2 – 10 ct
Market band$20 to $25 / ct
Premium
Fine · HeadlinePrice index107.0▲ 1.7% qtr
Q1 2025Q2 2026
Example grade (e.g.)Uruguay / ZambiaDeep purple with red flashVVS clarity5 – 15 ct
Market band$50 to $70 / ct
Investor
Extra-FinePrice index108.0▲ 1.9% qtr
Q1 2025Q2 2026
Example grade (e.g.)Uruguay (Siberian-grade)Vivid deep reddish-purpleVVS clarity15 ct +
Market band$100+ / ct
Price index base 100 at Q1 2025. Market band is the per-carat range across the segment. Example grades are illustrative, not an offer to buy or sell. As of Q2 2026.
Other gems
See the market data for any other species we cover.
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