Aquamarine Gemstone Guide

What is Aquamarine?

Aquamarine is a blue to blue-green variety of the mineral beryl, sharing its mineral family with emerald and morganite. The name derives from the Latin 'aqua marina', meaning 'water of the sea', a fitting description for this gemstone's serene oceanic hues.

Prized for its clarity and transparency, aquamarine has been treasured throughout history for its calming colour and exceptional brilliance. Today, it remains a popular choice for fine jewellery, particularly in rings, pendants, earrings and bracelets.

What Gives Aquamarine Its Colour?

The distinctive blue and blue-green tones of aquamarine are caused by trace amounts of iron within the beryl crystal structure. The concentration and oxidation state of the iron determine the intensity and exact shade of the colour, ranging from very pale, almost colourless blue to deeper, more saturated blue-green hues.

Aquamarine Colours and Appearance

Aquamarine gemstones display a range of blue tones. The most common are pale, delicate blues reminiscent of clear coastal waters. Stronger, more saturated blues and blue-greens are less common and often more highly valued.

High-quality aquamarine is typically eye-clean, meaning it has no visible inclusions when viewed without magnification. This exceptional clarity allows light to pass through the stone beautifully, enhancing its brilliance and colour.

How Durable is Aquamarine?

With a Mohs hardness of 7.5 to 8, aquamarine is a durable gemstone suitable for everyday wear in rings, earrings, necklaces, pendants and bracelets. It resists scratching from most common materials and maintains its polish well over time.

However, like all gemstones, aquamarine can chip or fracture if subjected to a hard knock or sharp impact. Reasonable care during wear and storage will help preserve its beauty for years to come.

Where is Aquamarine Found?

Aquamarine is mined in several countries around the world. Brazil is historically the most significant source, producing aquamarines in a wide range of sizes and qualities. Other notable sources include Pakistan, Madagascar, Nigeria and Mozambique.

It's important to note that the geographic origin of an aquamarine does not, by itself, determine its quality. Colour, clarity, cut and carat weight are the primary factors that influence a gemstone's value and appearance.

Natural and Treated Aquamarine

Heat treatment is commonly applied to aquamarine to reduce greenish tones and enhance the purer blue colour that is generally preferred in the market. This treatment is permanent and stable, and it does not affect the gemstone's durability.

Treated aquamarine is still genuine aquamarine. Heat treatment is a widely accepted practice in the gemstone industry and does not diminish the stone's authenticity or long-term beauty.

What Determines Aquamarine Quality?

Several factors influence the quality and value of an aquamarine gemstone:

Colour: Deeper, more saturated blues are generally more desirable than very pale stones, though personal preference plays a significant role.

Clarity: Eye-clean stones with no visible inclusions are preferred and command higher prices.

Cut: A well-executed cut maximises brilliance and colour, while a poor cut can make even a fine-quality stone appear dull.

Carat weight: Larger aquamarines are relatively available compared to some other gemstones, but size still influences value, particularly in stones with strong colour and high clarity.

Treatments: Disclosure of any treatments, such as heat, is important for transparency and informed purchasing.

Aquamarine in Jewellery

Aquamarine's combination of beautiful blue colour, excellent transparency and good durability makes it a popular choice for fine jewellery. It is frequently set in rings, earrings, pendants, necklaces and bracelets, often in white metals such as platinum, white gold or sterling silver, which complement its cool tones.

The gemstone's versatility allows it to suit both classic and contemporary designs, making it an enduring favourite for those seeking elegant, wearable pieces.

How to Care for Aquamarine Jewellery

Caring for aquamarine jewellery is straightforward. Clean your pieces regularly using lukewarm water, a mild soap and a soft cloth or brush. Rinse thoroughly and dry with a lint-free cloth.

Avoid exposing aquamarine to harsh chemicals, including household cleaners and chlorine. Remove jewellery before engaging in activities that could result in hard impacts or knocks. Sudden temperature changes should also be avoided, as they may cause stress to the stone.

Store aquamarine jewellery separately from harder gemstones, such as diamonds or sapphires, to prevent scratching.

Aquamarine Meaning and Symbolism

Throughout history, aquamarine has been associated with the sea and has carried symbolic meanings related to calmness, courage and clarity. Ancient mariners believed it brought protection during voyages, whilst other cultures have linked it to tranquillity and clear communication.

These associations are rooted in tradition and cultural symbolism rather than scientific or healing properties. Today, many people choose aquamarine jewellery for its serene colour and the personal meaning it holds for them.

Aquamarine Birthstone

Aquamarine is the birthstone for March, making it a popular choice for birthday gifts and personalised jewellery. Its fresh, oceanic colour is often seen as a fitting representation of the transition from winter to spring.

Aquamarine vs Blue Topaz

Aquamarine and blue topaz can appear similar at first glance, both displaying attractive blue tones. However, they are distinct gemstones with different mineral compositions and properties.

Aquamarine is a variety of beryl, whilst blue topaz is a variety of topaz. Blue topaz is typically treated to achieve its colour and is generally more affordable than aquamarine. Aquamarine tends to have a softer, more subtle blue, whereas blue topaz often displays a more vivid, saturated hue.

Both gemstones are durable and suitable for jewellery, but their differences in appearance, origin and value make them distinct choices.