Maxixe Aquamarine

Maxixe aquamarine, or maxixe beryl, is a deep, intense blue beryl first found at the Maxixe mine in Minas Gerais, Brazil. Its color is far more saturated than ordinary aquamarine, rivaling fine sapphire.

Unlike normal aquamarine, whose blue comes from iron, the maxixe color is produced by radiation-induced color centers rather than a stable chromophore. As a result, the deep blue typically fades on exposure to light or gentle heat, often reverting toward colorless or pale tones.

Because of this instability, maxixe-type material is treated with caution in the trade. Natural and irradiated stones both exist, and buyers should be aware the color may not last.

Maxixe beryl originates in granitic pegmatites like other beryl, but its distinctive deep blue arises from color centers, defects in the crystal structure created or activated by natural or artificial irradiation.

These color centers absorb light to give the strong blue but are metastable, so energy from light or heat can erase them, causing the color to fade. Modern maxixe-type blue is often produced by irradiating pale or colorless beryl.

The original natural material came from the Maxixe mine in Minas Gerais, Brazil; irradiated maxixe-type beryl can be made from beryl of various origins.

Maxixe aquamarine shows an unusually deep, slightly violetish blue, far richer than ordinary iron-colored aquamarine, with beryl hardness 7.5-8 and vitreous luster. A key clue is its dichroism, with strong color seen along directions opposite to those of normal aquamarine.

The most telling feature is color instability: the blue fades with prolonged light or mild heat. Gemological labs can detect the maxixe color center spectroscopically.

Distinguish it from stable aquamarine (iron-colored, lighter and lasting), blue topaz, and sapphire (much harder, denser). Any very deep, possibly fading beryl blue should raise suspicion of maxixe-type color.

Maxixe-type beryl is occasionally faceted for its dramatic deep blue, but its tendency to fade limits its use and value in fine jewelry, and reputable sellers disclose the color's instability.

It is chiefly of interest to collectors and as a gemological curiosity illustrating color centers. Stones must be protected from prolonged light and heat to preserve color as long as possible.

It carries aquamarine's traditional metaphysical associations with calm and clear communication, though its practical desirability is constrained by the impermanent color.