Aquamarine Price Per Carat: How Much Is Aquamarine Worth in 2026?

Aquamarine price per carat generally ranges from about $10 for pale, commercial-grade stones up to $900 or more for the deep, saturated blue the trade calls "Santa Maria." Most aquamarine bought for everyday jewelry sits in the $40–$250 per carat range. Unlike diamonds, price per carat does not climb steeply with size — a clean, well-cut 10-carat aquamarine often costs only modestly more per carat than a 1-carat stone of the same color. Below, we break down exactly what moves that number, tier by tier, including a factor most price guides skip entirely: the very different economics of rough versus faceted material.

Why Aquamarine Stays a Favorite?

Aquamarine is the blue-to-green-blue variety of the mineral beryl — the same mineral family as emerald, colored by traces of iron rather than the chromium and vanadium that tint emerald green, according to the Gemological Institute of America (GIA). Its name comes from the Latin for "water of the sea," a fitting description for a stone that ranges from a pale sky wash to a deep ocean blue. That combination — genuine rarity at the top of the range, real affordability everywhere else — is why it has held its place as the March birthstone and a mainstay of engagement and anniversary jewelry for well over a century.

How Much Is Aquamarine Worth in 2026?

Retail price per carat for natural, loose (faceted) aquamarine, by size and color quality:

A few assumptions are built into this table: the stone is natural (not synthetic or a doublet), gently heat-treated to remove any green tint — standard practice covering most aquamarine on the market — and clean to the eye. Untreated stones of the same color and clarity trade at roughly the same price, since heating is routine enough that the market prices nearly all aquamarine as though it's been treated, whether it has or not. Irradiated imitations and unrelated blue stones sold under the aquamarine name fall well outside this table — more on that below.

One more thing this table doesn't cover: it describes faceted stones bought for jewelry. Rough, uncut aquamarine — the crystal as it comes out of the ground — trades at a fraction of these numbers, for reasons that matter a lot if you're buying for cutting rather than for a ring. We'll get to that shortly.

What Actually Determines the Price

Aquamarine, like most colored gemstones, is priced on the four Cs — color, clarity, cut, and carat weight — but the four don't carry equal weight, and the details matter more than the acronym.

Color is the dominant factor by a wide margin. GIA's colored-stone system breaks color into hue, tone, and saturation, and for aquamarine, saturation does almost all the work: a pure, medium-to-deep blue with no green cast will consistently outsell a pale or greenish stone of identical size and clarity. The trade's benchmark for the finest color is "Santa Maria," named for the Santa Maria de Itabira mine in Brazil, where the deepest natural blues were historically found. Today the term works more like "pigeon's blood" does for ruby — a color description applied to material of similar depth regardless of exact origin, including fine African production sometimes marketed as "Santa Maria Africana." A slight green tint, by contrast, can discount a stone 20–40% against an equally saturated pure blue, which is exactly why so much aquamarine is gently heated: the treatment removes the green, is permanent and undetectable, and is accepted throughout the trade as standard rather than a red flag.

Clarity matters, but less dramatically than color — mostly because aquamarine rarely needs the leniency other gems get. It typically grows with far fewer eye-visible inclusions than its cousin emerald, so "eye-clean" is the baseline expectation rather than a premium feature. Visible inclusions (as opposed to the fine, needle-like ones that occasionally produce a cat's-eye effect) push a stone into the commercial tier quickly.

Cut punches above its weight for pale material specifically. Because aquamarine's color often starts out light, a poorly proportioned or "windowed" cut — one that lets light leak straight through instead of bouncing color back to the eye — can make a decent stone look washed out and watery. Step cuts (often called emerald cuts) and round brilliants are the two most common shapes precisely because they're reliable at concentrating whatever color the rough has to offer.

Carat weight behaves differently in aquamarine than in almost any other colored gem, and it's worth understanding why. Beryl crystallizes in pegmatites — slow-cooling, mineral-rich rock formations that give crystals unusually long, undisturbed growing time. That's why gem-quality aquamarine crystals weighing hundreds of carats — occasionally hundreds of pounds — are a routine occurrence in the trade rather than a museum-only curiosity, according to the International Gem Society (IGS). Because large, clean rough is genuinely more available than it is for ruby, sapphire, or emerald, price per carat rises only modestly with size instead of compounding the way it does for those gems. The flip side: color tends to read deeper in larger stones cut from the same rough, which is part of why a fine large aquamarine still carries a real, if gentler, premium over a fine small one. For lapidaries who prefer buying by weight, our 500-gram rough aquamarine bulk lot offers a practical entry point into larger-parcel sourcing.

One caution worth flagging: you'll see aquamarine marketed as "AAA," "AA," or "A" grade. GIA's own consumer guidance is direct about this — no standardized, industry-wide grading scale exists for aquamarine the way it does for diamonds, and individual sellers are free to define their own tiers. GIA doesn't issue a colored-stone quality grade for aquamarine at all; its reports confirm whether a stone is natural or synthetic and flag any detectable treatment, not assign a letter grade. Treat a seller's "AAA" as that seller's own shorthand, not a verified external standard, and judge the actual color, clarity, and cut in front of you instead.

Rough vs. Faceted: Why "Price Per Carat" Isn't One Number

Nearly every aquamarine price guide online is written from a jewelry buyer's perspective — faceted stone, ready to set. That leaves out a whole side of the market: rough, uncut aquamarine bought by lapidaries and mineral collectors, where the per-carat economics look completely different. If you're new to sourcing rough, our wholesale rough gemstones collection covers a broad range of facet-grade material across species.

As of this writing, faceting-grade rough aquamarine parcels typically run $2–$4 per carat for good bulk material — a 118-carat rough parcel priced at $400 works out to roughly $3.40 per carat, and a 115-carat parcel at $280 comes to about $2.40 per carat. A smaller, rarer "Santa Maria"-color rough parcel commands considerably more per carat even uncut — around $16 per carat for a 22-carat lot — because color quality asserts itself in rough form almost as strongly as it does once faceted.

Why the gap between that and a $40–$900 faceted price? Three reasons: yield, labor, and selection. Faceting typically loses the majority of a rough stone's starting weight to cutting and polishing — a 20–35% finished yield is a realistic rule of thumb, meaning 65–80% of the rough's original carats don't survive the process. Skilled hand-faceting takes real time and expertise, and gets priced accordingly. And a rough dealer sells the crystal as found — included or clean, well- or poorly-colored — while a faceted-stone dealer has already sorted for the best material and absorbed the cost of the pieces that didn't cut well. If you're comparing a rough listing to a faceted listing to gauge a "deal," you're not comparing the same product; the exact math behind that yield loss is worth a closer look in our rough-to-ring yield ratio guide.

Where Aquamarine Comes From — and Why Origin Isn't Everything

Brazil remains the world's largest source of aquamarine, with Madagascar, Mozambique, Nigeria, and Zambia all producing significant gem-quality material. Less widely covered — but well documented on Mindat.org, the mineralogical reference database used across the collector and lapidary community — is the aquamarine coming out of Pakistan's Gilgit-Baltistan region, particularly pegmatite deposits in the Shigar Valley and Nagar district. Small-scale mining here is understood to date back to the mid-20th century and remains active today, producing everything from sky-blue faceting rough to museum-quality crystal specimens. Those looking to sample smaller parcels of origin-sourced material can start with our 51-gram raw aquamarine rough crystals, sourced from the same Pakistan–Afghanistan gem belt. It's part of why Folkmarketgems sources aquamarine rough and specimens from this region, alongside the Swat emerald and Kohistan peridot the area is better known for.

Here's the honest caveat, straight from GIA's own buying guidance: origin by itself isn't a value driver for aquamarine. A famous mine is well-regarded because it has historically produced fine material — not the other way around. A pale, included stone from Brazil is worth less than a vivid, clean stone from Pakistan or Madagascar, full stop. Origin is a genuinely interesting provenance detail worth asking about, but it's not a substitute for judging the color, clarity, and cut of the actual stone in front of you.

Aquamarine vs. Its Look-Alikes: Don't Overpay by Mistake

Aquamarine's pale, clean blue gets confused with a few other stones, and the price gap is large enough to matter. Blue topaz — by far the most common substitute — is usually colorless topaz turned blue through irradiation and heat treatment, a fully color-engineered process that puts it at a small fraction of aquamarine's price per carat no matter how saturated the blue looks. Light-blue sapphire and blue zircon can also resemble pale aquamarine to the untrained eye, though both are physically and optically distinguishable from it using standard gemological tests — refractive index and specific gravity — that any qualified jeweler or gem lab can run in minutes. For anyone navigating these distinctions at the buying stage, our guide on identifying real vs. fake gemstones covers the practical tests and red flags to watch for. If an "aquamarine" is priced dramatically below the ranges above, ask directly whether it's natural aquamarine and ask for that in writing on the receipt or certificate. A legitimate seller won't hesitate.

Those who want to compare aquamarine against other natural blue gemstones side by side will find that few offer the same combination of size availability, clarity, and price accessibility that aquamarine consistently delivers.

The World's Most Valuable Aquamarines

At the extreme top of the market, aquamarine pricing stops being about dollars per carat and starts being about singular objects. The Dom Pedro, a roughly 10,000-carat carved aquamarine obelisk now held in the Smithsonian Institution's gem collection, has been described by GIA as one gem capable of rivaling the Hope Diamond in significance. Objects like this don't trade on a per-carat basis; they're valued as unique works, the same way a museum wouldn't price a sculpture by its weight in stone.

Frequently Asked Questions

What is the average price per carat for aquamarine?

Most jewelry-grade aquamarine sells for $40 to $250 per carat. Pale commercial stones can run as low as $10/carat, while the finest saturated "Santa Maria" blue can exceed $900/carat.

Does aquamarine's value increase a lot with carat weight, the way a diamond's does?

No — and that's one of the gem's more buyer-friendly quirks. Because fine, large, clean aquamarine crystals are relatively available compared to other colored gems, price per carat rises gradually with size instead of compounding sharply. A larger stone typically costs more per carat, just not dramatically more, assuming equal color and clarity.

Is heat-treated aquamarine less valuable than untreated?

Not meaningfully. Gentle heating to remove a green tint is standard, stable, and undetectable, and it's applied to the large majority of aquamarine on the market. The trade prices color and clarity as they appear, not whether a stone has been heated.

Why is rough aquamarine so much cheaper per carat than a faceted stone?

Because faceting typically loses 65–80% of the rough's starting weight, and because a cut stone reflects paid labor and quality sorting that raw material hasn't been through yet. Rough and faceted prices aren't measuring the same thing.

Does the mine an aquamarine comes from affect its price?

Only indirectly. GIA's own guidance is that origin isn't a standalone value factor — a well-known locality is respected because it has historically produced fine material, but a specific mine name doesn't override the color, clarity, and cut of the individual stone in front of you.

The Bottom Line

Aquamarine remains one of the most approachable fine gemstones on the market: real rarity at the top of the range, genuine affordability everywhere else, and — unlike a diamond — very little size penalty if you want to go big. Whether you're comparing a faceted stone for a ring or a rough parcel for your next cutting project, the number that matters isn't the carat weight on its own. It's the depth of blue you're actually looking at.