Aquamarine, a type of beryl, is the birthstone for the month of March. Its name is derived from the resemblance to the captivating hues of "sea water." Aquamarine occurs in a range of shades, spanning from blue to greenish-blue, with the deeper and more intense colours being highly coveted.
The coloration in aquamarine is attributed to the presence of iron. A significant portion of the aquamarine available in the market undergoes heat treatment, which transforms the original yellowish, greenish, or bluish-green material into a stable blue hue. Upon close examination, one might observe long parallel inclusions in certain stones, which are actually elongated cavities filled with liquid or gas and are often referred to as "rain." While aquamarine can be found in various shades of blue and greenish-blue, the most desirable specimens are those that exhibit a strong, vibrant colour combined with exceptional clarity.
Beryl, a gemstone family, is inherently colorless in its purest form. However, it is the introduction of various trace impurities that imbue it with captivating colors, resulting in a diverse range of gemstone varieties. These include pale blue to greenish blue (aquamarine), green (emerald), pink (morganite), yellow (heliodor), and colorless (goshenite). Many of these beryl varieties naturally form magnificent crystals, showcasing their inherent beauty and potential for exquisite gemstone cutting.