There is a particular shade of blue that exists only in certain places: the shallows of a lagoon in afternoon light, the edge of a glacier seen from below, the sky on the first genuinely clear morning of spring. Aquamarine holds that colour. Not the deep navy of sapphire, not the turquoise of the tropics, but something cooler, paler, and somehow more honest — the colour of water before it becomes sea.

A Beryl Born in the Earth's Heat

Aquamarine is a variety of beryl, the same mineral family that produces emerald and golden heliodor. Its distinctive blue-green colour comes from traces of iron — specifically ferrous iron (Fe²⁺), which absorbs light in the red and yellow spectrum, leaving behind that characteristic cool blue. The more iron, the deeper the colour; the less, the closer it approaches the palest sky blue that collectors sometimes call "Santa Maria" after the mines in Brazil where it was first found in abundance.

The finest aquamarines are eye-clean — transparent to the naked eye without visible inclusions — and cut to emphasise their colour saturation. Larger stones tend to show their colour more fully, which is why aquamarine is one of the few gemstones where a 10-carat stone is not necessarily more expensive per carat than a 2-carat stone; size and colour interact in a way that makes each stone an individual negotiation.

Mythology and Meaning

The Latin name aqua marina — water of the sea — was given by Roman naturalists, and the stone has been associated with water, clarity, and safe passage ever since. Ancient sailors carried aquamarine as protection against storms and as an aid to navigation, believing the stone contained the spirit of the sea. In medieval lapidaries — the encyclopaedias of gemstone lore — aquamarine was listed as an antidote to poison and a remedy for ailments of the throat and eyes, supposedly because its colour was thought to carry the healing properties of clear water.

What persists from those older associations, stripped of superstition, is something true about the stone's aesthetic effect: aquamarine is genuinely calming. Its pale clarity has none of the urgency of ruby or the heaviness of deep blue sapphire. It is a contemplative stone, suited to long staring at.

Aquamarine in the Alex Yuvero Collection

In the Alex Yuvero Aquamarine pieces, we work with stones selected for their particular quality of paleness — not the heavily saturated stones the market often values most highly, but the ones where the colour is almost absent, almost air. These stones carry the light differently: they seem to hold it rather than reflect it back.

The settings are minimal by design. Heavy metalwork competes with the stone's delicacy. Instead, we use slim 18-carat gold bezels and fine prong settings that hold the aquamarine as though it might float free — which is, in some sense, the effect we are trying to create. A piece of aquamarine jewellery should feel like wearing open sky.

Durability and Care

Aquamarine rates 7.5–8 on the Mohs hardness scale, making it suitable for everyday wear with reasonable care. It is harder than most metals and will not scratch from normal contact. However, like all beryls, it has a cleavage plane — a direction along which it can split cleanly if struck sharply at the right angle — so it should not be subjected to hard impacts.

The colour of aquamarine can fade with prolonged exposure to direct sunlight, as UV light bleaches the iron-based colour centres. Store your aquamarine pieces away from direct light, and avoid leaving them in sunlit windowsills or car dashboards for extended periods.

Cleaning is straightforward: warm soapy water and a soft brush, followed by a thorough rinse. Ultrasonic cleaners are generally safe for included aquamarines, but we recommend hand-washing for any stone with visible fractures or inclusions, as vibration can propagate existing cracks.

Beyond care instructions, what we ask of aquamarine jewellery is simply to be noticed. The stone's quality — that stillness, that refusal to shout — rewards the kind of attention that most decorative objects never receive. It is a stone for looking at carefully, over time.