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Aquamarine (gem)

earth science Maturity 11-13 Next article →

Aquamarine is a beautiful gemstone. It is a type of beryl. This means it is in the same family as emeralds. Most aquamarines look pale blue or light green. This color comes from tiny amounts of iron inside the stone.

Aquamarin
Aquamarin

These gems grow deep in the Earth. They take millions of years to form. They often grow in granite pegmatites. These are coarse rocks made from cooling magma. They can also form from hydrothermal fluids. These are hot liquids filled with minerals.

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

Aquamarine is a hard stone. On the Mohs scale, it is rated 7.5 to 8. This scale measures how hard a mineral is. Because it is hard, it is good for jewelry. People use it for rings and necklaces.

Aquamarine, platinum, and diamond brooch-pendant - NARA - 192417
Aquamarine, platinum, and diamond brooch-pendant - NARA - 192417

Some aquamarines are very large. The Dom Pedro is a famous example. It is the largest cut aquamarine in the world. It weighs 10,363 carats. You can see it at a museum in Washington, D.C.

Dom Pedro Aquamarine
Dom Pedro Aquamarine
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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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