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Aluminium oxide

physical science Maturity 5-7

Some rocks are very special.

Corindon azulEZ.jpg
Corindon azulEZ.jpg
They can be bright red rubies. They can be blue sapphires. These gems are very hard. They help make tools. They even help make metal. Can you find a shiny gem?

38 words
🖼️ Images & Media (4)
File:Oxid hlinitý.PNG
Oxid hlinitý.PNG
File:Corindon azulEZ.jpg
Corindon azulEZ.jpg
File:2005alumina.PNG
2005alumina.PNG
File:Aluminum Oxide Ice Cream IMG20250316190022.jpg
Aluminum Oxide Ice Cream IMG20250316190022.jpg
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📚 Content adapted from Wikipedia | Readability: FK 14.5 | Vital Level 5