Rock Corner - Aquamarine
Aquamarine is the blue variety of the beryl species of minerals. The best known and most valuable of this group is the green, known as emerald, but it also occurs in lemon yellow, golden yellow, light yellow green, pink and clear ( these are collectively classed as precious beryls ). Aquamarine derives its colour from the presence of iron.

The name derives from the Latin for water of the sea, because of its beautiful colour.

It has a hardness of 7 1/2 to 8. The most valuable aquamarines are a deep blue, and lower qualities may be heated to 400 to 450 degrees C to permanently change them to the desired shade. If the heating process is not properly controlled the stones can be discoloured. Aquamarine is  brittle and vulnerable to pressure.

Brazil has the most important deposits, but it is also found in Australia, China, India, Kenya, Madagascar, Mozambique, Myanmar, Namibia, Nigeria, Zambia, Zimbabwe and the US.

In earlier times it was carried as a talisman against drowning by sailors. In crystal healing it is regarded as a stone of courage. It has calming energies that reduce stress.  
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