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Aquamarine (gem)

earth science Maturity 11-13 Next article →

Aquamarine is a beautiful gemstone with a calm color. It is a variety of a mineral called beryl. This means it belongs to the same family as emeralds and morganite. Most aquamarines look pale blue or light green. This color comes from tiny amounts of iron inside the crystal. The name comes from the Latin words for water and sea.

Aquamarin
Aquamarin

These gems grow deep inside the Earth over millions of years. One way they form is in granite pegmatites. These are coarse rocks that form from the very last parts of cooling magma. This magma is rich in minerals like beryllium and silicon. Aquamarine can also form from hydrothermal fluids. These are hot, mineral-rich liquids that move through the ground.

Aquamarine in pegmatitic granite 1 (49052222392)
Aquamarine in pegmatitic granite 1 (49052222392)

People have loved this stone for a very long time. Ancient sailors used it as a lucky charm to stay safe from shipwrecks. They thought it came from mermaid treasure chests. Ancient Romans believed the stone could help with healing. The Greeks used it to carve small pictures called intaglios. In Japan, people used the stone to make small carvings called netsuke.

Many famous jewels feature this lovely stone. The Dom Pedro is the largest cut aquamarine in the world. It was found in Brazil and weighs 10,363 carats. It is now kept in a museum in Washington, D.C. Other famous pieces include Queen Elizabeth's Tiara and Meghan Markle's ring. The Roosevelt Aquamarine is also very special. It was a gift given to Eleanor Roosevelt in 1936.

Dom Pedro Aquamarine
Dom Pedro Aquamarine

Aquamarine is a very tough stone for everyday wear. It has a hardness of 7.5 to 8 on the Mohs scale. This scale measures how well a mineral resists being scratched. You can find aquamarine in many places like Brazil, Pakistan, and the United States. Brazil's state of Minas Gerais is a major source for these gems. People use them for rings, necklaces, and even in some cosmetics.

Aquamarine, platinum, and diamond brooch-pendant - NARA - 192417
Aquamarine, platinum, and diamond brooch-pendant - NARA - 192417
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🖼️ Images & Media (8)
File:Aquamarin.png
Aquamarin.png
File:Aquamarine in pegmatitic granite 1 (49052222392).jpg
Aquamarine in pegmatitic granite 1...
File:Elizabeth II Southern Cross.png
Elizabeth II Southern Cross.png
File:Aquamarine, platinum, and diamond brooch-pendant - NARA - 192417.gif
Aquamarine, platinum, and diamond...
File:Roman - Intaglio of Julia Domna - Walters 421218.jpg
Roman - Intaglio of Julia Domna - Walters...
File:Natural History Museum - Aquamarine, Minas Gerais.jpg
Natural History Museum - Aquamarine,...
File:Dom Pedro Aquamarine.jpg
Dom Pedro Aquamarine.jpg
File:Jean schlumberger per tiffany & co., spilla fiocco schlumberger, con acquamarina da 148,5 carati, diamanti, platino e oro.jpg
Jean schlumberger per tiffany & co.,...
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