Aquamarine is the blue colour crystals in the beryl group of gems. Aquamarine is colourless however, it is frequently tinted by impurities giving it the colours of green, blue, yellow, red, and white.
It is the birthstone for March and given for 16th and 19th wedding anniversaries.
Biggest Ever Found
The leading producer of Aquamarines is Brazil, with many other notable occurences worldwide. The biggest Aquamarine ever mined was found at the city of Marambaia, Minas Gerais. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.
Some gemstones are heated to high temperatures to enhance the colour and/or clarity of a stone. Aquamarines are often heat treated to change a blue-green or teal coloured stone to a pure blue.
Colour Group Chart