Like Water Held in Stone.

Aquamarine

Aquamarine has a way of looking simple until you really start paying attention to it.

At first glance, it is blue.

Then you notice the green.

The gray.

The icy transparency.

The way one stone feels almost colorless while another carries enough saturation to stop you across the room.

That range is what makes aquamarine interesting to us.

At Caleb B. Quashen International, we look for aquamarine with presence — not just clean material, but stones with color, scale, interesting rough, and cuts that make the crystal feel like more than a pale blue gemstone.

Sometimes that means a perfectly clean precision cut.

Sometimes it means keeping an unusual outline.

Sometimes the rough is so good that the hardest part is knowing when to stop cutting.

What Is Aquamarine?

Aquamarine is the blue to greenish-blue variety of beryl, the same mineral family as emerald.

Its name comes from the Latin for seawater, which makes sense the first time you see a good piece of material.

The color can range from pale, almost transparent blue to stronger blue-green and deeper blue tones. Most aquamarine is relatively clean compared with many other colored gemstones, and the crystals can grow unusually large and well formed.

That combination — clarity, size, and color — gives cutters a lot to work with.

Color Is Everything

Not all aquamarine is the same shade.

Some stones are nearly colorless with only the slightest hint of blue.

Others lean green.

Some are soft seafoam.

Some are icy and bright.

And then occasionally you find material with enough saturation that it barely looks like what people expect aquamarine to be.

Those are the stones that make us look twice.

Aquamarine color comes primarily from iron within the beryl crystal, and different oxidation states can influence whether the material appears more blue or more greenish blue. Heat treatment is commonly used in the trade to reduce green components and produce a purer blue appearance.

We do not believe every aquamarine needs to look the same shade of blue.

Sometimes the green is the best part.

Nasarawa, Nigeria

Some of the aquamarine we are most excited about comes from Nasarawa State in Nigeria.

Nigeria has produced aquamarine for decades, but certain Nasarawa finds have produced material with unusually deep and saturated blue color.

GIA documented one notable discovery where aquamarine was recovered by small-scale artisanal miners from a weathered pegmatite deposit. The material stood out for its unusually strong blue color and distinctive chemistry.

That kind of material changes your expectations of what aquamarine can look like.

Instead of pale blue, you can get richness.

Instead of something delicate, you can get something with real weight and presence.

We like that.

Aquamarine Around the World

Aquamarine is found in several major gemstone-producing regions.

Brazil, particularly Minas Gerais, has historically been one of the most important sources. Pakistan is known for remarkably clear aquamarine mined high in the Karakoram Mountains. African sources include Nigeria, Mozambique, Zambia, Madagascar, and Kenya.

Different sources can produce different combinations of color, transparency, crystal size, and saturation.

Brazilian material may be familiar to many collectors.

Pakistani rough can be exceptionally clear.

African aquamarine can range from pale and crystalline to surprisingly saturated.

Origin gives us context.

The stone still has to do something interesting.

Clean Does Not Mean Boring

Aquamarine is often naturally clean.

That can be a good thing.

Large, transparent crystals allow the cutter to use long facets, open designs, step cuts, and shapes that would be difficult to pull off in more heavily included material.

But clarity alone is not enough for us.

A perfectly clean aquamarine with weak color and an uninspired cut can still feel flat.

We want the transparency to serve the stone.

It should let the color move.

It should let the facets work.

It should give you somewhere to look.

Cutting Aquamarine

Aquamarine rough can give a cutter a lot of freedom.

The crystals can be long.

The material can be clean.

The color can concentrate differently depending on orientation.

That means the cut can completely change how the stone feels.

An elongated crystal may become a long shield or emerald-style cut.

A cleaner piece may take a more complex precision pattern.

A deeply saturated stone may need less help and more restraint.

Sometimes we cut to maximize light.

Sometimes to preserve size.

Sometimes to protect the best color.

And sometimes because the rough is already telling us exactly what shape it wants to become.

We try not to argue with good rough.

Heat Treatment & Natural Color

Aquamarine is commonly heat treated.

The treatment is generally used to reduce green or yellowish components and shift the appearance toward a more purely blue color.

Untreated aquamarine may retain more greenish or seafoam tones.

We look at treatment stone by stone and disclose known treatment information on the individual listing.

There is nothing wrong with a properly disclosed heated aquamarine.

There is also something special about material whose natural color was good enough to leave alone.

The important part is knowing which one you are looking at.

Size Changes the Experience

Aquamarine can grow in very large crystals.

That gives the material an advantage most gemstones simply do not have.

Larger stones can show off long facet patterns, broad windows of color, and architectural cuts that would not make sense in smaller material.

That is one reason aquamarine can be so striking in a pendant or statement ring.

The stone has room to breathe.

And when the color is good, size only makes it more obvious.

Choosing a Loose Aquamarine

Aquamarine works especially well when you choose the stone before deciding on the jewelry.

A pale icy stone may want a clean, minimal design.

A deeper blue piece may carry a much stronger setting.

A long crystal-inspired cut may dictate the entire silhouette of the finished piece.

And a greenish aquamarine may look completely different depending on the metal around it.

That is why we prefer starting with the gemstone.

See the color.

See the shape.

See what it does in natural light.

Then decide what it should become.

Selected for More Than Being Blue

We do not buy aquamarine because it checks the box for March birthstone.

We buy it because the material is good.

Sometimes that means exceptional clarity.

Sometimes saturated color.

Sometimes a strange piece of rough.

Sometimes a cut that gives the stone an entirely different personality.

And occasionally it is a piece we know we would regret walking away from.

That is usually enough.

Aquamarine Questions

What color is aquamarine?

Aquamarine ranges from greenish blue to blue, usually in lighter tones. More saturated blue material can be especially striking, and some stones retain noticeable green or seafoam components.

Is aquamarine the same mineral as emerald?

Yes.

Both are varieties of beryl. Aquamarine is the blue to greenish-blue variety, while emerald is the green to bluish-green variety.

Where is aquamarine found?

Important sources include Brazil, Pakistan, Nigeria, Mozambique, Zambia, Madagascar, and Kenya, along with several other countries.

What is special about Nigerian aquamarine?

Nigeria has produced high-quality aquamarine for decades, and Nasarawa State has produced particularly saturated blue material. A notable 2019 find documented by GIA showed unusually deep blue color from a small-scale artisanal deposit.

Is aquamarine usually treated?

Heat treatment is common and is generally used to reduce greenish tones and create a bluer appearance.

Treatment varies by stone, so we disclose known treatment information individually.

Is aquamarine durable enough for jewelry?

Aquamarine has a Mohs hardness of about 7.5 to 8, making it suitable for many types of jewelry. As with any gemstone, the specific cut, inclusions, setting, and type of wear should still be considered.

Can CBQ source a specific aquamarine?

Yes.

If you are looking for a particular origin, color, size, shape, treatment status, or cut, contact us and tell us what you have in mind.