Aquamarine, Emerald and Morganite are all Beryls - just like golden beryl, yellowish-green heliodor, colourless goshenite and the rare red beryl. Maxixe an unusual type of beryl we occasionally come across is a deep blue stone that fades to white when exposed to sunlight or is subjected to heat treatment, though the colour returns with irradiation.

Whether blue, green, yellow, colourless or pink, their chemical and physical properties are essentially the same; it is only in their colours that they differ from one another. Beryls are found in certain European countries such as the Ural Mountains, Austria, Germany, and Ireland. They also occur in Madagascar (especially morganite). The most famous source of emeralds in the world is in Colombia, where they make a unique appearance in limestone deposits.

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