Aquamarine, the blue variety of beryl, offers one of the most accessible entry points to collecting fine gemstones. Prices range from $50/ct for lighter stones to $600+/ct for deeply saturated 'Santa Maria' blue specimens. Unlike many precious gems, aquamarines are commonly available in larger sizes — 5-10+ carat stones are not uncommon — making them ideal for statement jewelry pieces.
Aquamarine Price Chart
| Quality | Price/Carat | Notes |
|---|---|---|
| Pale blue, under 3ct | $30–$100 | Commercial grade |
| Medium blue, clean, 3-10ct | $100–$300 | Fine jewelry grade |
| Vivid blue, Santa Maria, 5ct+ | $300–$600 | Collector quality |
| Exceptional saturation, large | $500–$800+ | Premium specimens |
Color Intensity Drives Aquamarine Value
Color saturation is the primary value driver for aquamarine. The most desirable color is a medium-dark, vivid blue without green or gray modifiers — the legendary 'Santa Maria' color named after the Brazilian mine. Lighter, paler stones are significantly more affordable. Most aquamarines start as greenish-blue and are heat-treated to remove the green component, producing a purer blue. This treatment is permanent, universally accepted, and does not affect pricing. Untreated aquamarines with naturally pure blue color exist but are rare and command modest premiums.
Size: Aquamarine's Advantage
Unlike most precious gemstones, aquamarine's price-per-carat doesn't escalate dramatically with size. Large, clean aquamarines are relatively common, making them excellent for bold jewelry designs. A 1-carat fine aquamarine might sell for $200-$400/ct, while a 10-carat stone of comparable quality might be $300-$600/ct — a modest increase compared to the exponential jumps seen in rubies or emeralds. This makes aquamarine outstanding value for those who want impressive carat weight without the astronomical cost of the 'Big Three.' Use GemstoneAI to estimate carat weight and color grade before buying.
- Under 1ct, light blue: $30–$100/ct
- 1–5ct, medium blue: $100–$300/ct
- 5–10ct, vivid blue: $200–$500/ct
- 10ct+, Santa Maria blue: $400–$800/ct
- Exceptional large stones (50ct+): $300–$600/ct
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