Image: Corundum (ruby) specimen

Corundum (ruby) specimen

Corundum - this variety is called a ruby and is embedded in calcite. Specimen from the Albert Chapman Collection.

C Bento
© Australian Museum


What is it made of?

It is made of aluminium and oxygen. This variety is called ruby and is a hematite group mineral.

Other minerals in specimen.


Where was it found?

Mogok Ruby Mines, Mogok, Burma.

What is it used for?

Ruby corundum is cut as valuable gemstones because of its red colour and hardness. Its hardness makes it useful as an abrasive and for polishing.

Actual size

4.5 x 3cm

Additional information

 Registration Number: D.50550

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