Resembling water, this increasingly popular variety of the mineral beryl is blue to bluish green.
The same mineral as emerald, this greenish-blue variety of beryl is named after the Latin for ‘sea water’. Aquamarine can come in large sizes, forming in pegmatites, and is often very ‘clean’, or free from inclusions, making it a popular gemstone.
Heat treatment can reduce the green and improve the blue colour of aquamarines.
The most famous aquamarine deposits are in Brazil, with the Santa Maria mine producing particularly celebrated deep blues. Aquamarine is the birthstone for March.
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