Aquamarines

Aquamarine has delicay with its blue or turquoise colour. It is closely related to emerald. Colors vary, and in addition to blue, yellow beryl heliodor, rose pink beryl (morganite, red berry and white beryl (goshenite) are also to be found.

Aquamarine is a beryl with a hexagonal crystal a beryllium aluminium silicate mineral. It has a specific gravity of 2.68 to 2.74 and a Mohs hardness of from 7.5 to 8. Aquamarine typically is on the low end of the specific gravity range, normally at less than 2.7. The pink variety exhibits a high specific gravity of around 2.8. Refrative indices range around 1.57 to 1.58.

The biggest aquamarine ever mined was found at the city of Marambaia, Minas Gerais, Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.
Some of it are found in Russia. The gem-gravel placer deposits of Sri Lanka contain aquamarine. Clear yellow beryl are from Brazil, is sometimes called aquamarine chrysolite.When corundum presents the bluish tint of typica auamarine.

Aquamarines can be found at Mt. Antero in central Colorado. It has also been found in Wycoming at the Big Horn mountains. In Brazil, there are mines in the states of Minas Gerais, Espirito Santo and Bahia. The Mines of Colombia, Zambia, Madagascar, Malawi, Tanzania and Kenya also produce aquamarine.