Aquamarine pale blue

Aquamarine, a pale blue variety of beryl, is a precious gemstone valued for its color and clarity, with notable deposits in Brazil.

About this subject

Aquamarine is one of the best-known varieties of the mineral beryl, composed of beryllium aluminum silicate. Its pale blue to blue-green color is caused by the presence of iron ions (Fe²⁺) in the crystal structure. Aquamarine crystals are hexagonal and can reach impressive sizes, with specimens weighing over 100 kg recorded. Major global deposits are found in Brazil, especially in Minas Gerais (regions of Governador Valadares and Teófilo Otoni), Espírito Santo and Bahia. Other producing countries include Pakistan, Afghanistan, Madagascar, Russia, and the United States. Brazil is historically the largest producer of gem-quality aquamarine, accounting for about 70% of global output. Ancient sailors used the gem as an amulet to protect against storms, believing it calmed the waves. The name derives from Latin "aqua marina", meaning "seawater". On the Mohs scale of hardness, aquamarine rates 7.5 to 8, making it durable for jewelry. Its value is determined by color saturation (intense blue is rarer and more expensive), transparency, and lack of inclusions. Large stones over 10 carats are especially rare. One of the most famous pieces is the "Dom Pedro Aquamarine", a 10,363-carat carved crystal displayed at the Smithsonian Institution.

Frequently Asked Questions

What is aquamarine?

Aquamarine is a variety of the mineral beryl, known for its pale blue to blue-green color. It is a precious gemstone used in jewelry and decorative objects.

Where are the main deposits of aquamarine found?

The largest deposits are in Brazil, mainly in Minas Gerais, Espírito Santo, and Bahia. Other significant sources include Pakistan, Afghanistan, and Madagascar.

What properties make aquamarine valuable?

The intense and uniform blue color, transparency, lack of inclusions, and size are the main factors. Stones over 10 carats with saturated color are extremely rare and valuable.