Aquamarine pale blue

Pale blue aquamarine, a variety of the mineral beryl, known for its beauty and use in fine jewelry.

About this subject

Aquamarine is a variety of the mineral beryl, whose pale blue to greenish-blue color is caused by iron ions in its crystal structure. The name derives from Latin "aqua marina", meaning "seawater", referencing its evocative hue. Brazil is one of the world's largest producers, with notable deposits in Minas Gerais, such as the Teófilo Otoni and Governador Valadares regions, yielding high-quality crystals of remarkable size.

On the Mohs scale, aquamarine has a hardness of 7.5 to 8, making it resistant to scratches and suitable for everyday jewelry like rings and earrings. Stones with intense color and no inclusions are most valued. Low-temperature heating (around 400°C) is a common treatment to remove greenish tones and enhance blue, a stable and accepted practice in the market.

Historically, aquamarine was used by sailors as a talisman for protection against shipwrecks, and it also serves as a gift for the 19th wedding anniversary. Large aquamarine crystals, such as the 110 kg specimen found in Brazil in 1910, are rare and highly prized by collectors. Today, in addition to jewelry, the stone is cut in various shapes to enhance its luster and translucency.

Frequently Asked Questions

What is aquamarine?

Aquamarine is a variety of the mineral beryl, with a pale blue to greenish-blue color caused by iron. It is used as a gemstone in jewelry.

Where is aquamarine found?

Major deposits are in Brazil (Minas Gerais), as well as Pakistan, Madagascar, Russia, and the United States. Brazil is the world's largest producer.

Which color of aquamarine is most valuable?

The most valued are intense blue stones with no greenish tones and no visible inclusions. Heat treatment is common to enhance color.