Corundum Meaning in English
word
Definition
Corundum is a very hard mineral made of aluminum oxide, often used as an abrasive. When it is transparent and colored, it becomes precious gems like rubies and sapphires.
Usage & Nuances
Corundum is a scientific or technical term, rarely used in casual conversation. In gemology, 'corundum' refers to the mineral, while 'ruby' and 'sapphire' are its red and blue gem varieties. The word appears in contexts involving mineralogy, jewelry, and materials science.
Example Sentences
Corundum is one of the hardest natural minerals.
basic
The gemstone ruby is actually red corundum.
basic
Corundum is used in some types of sandpaper.
basic
Did you know sapphires are just blue corundum?
natural
Industrial drills often use synthetic corundum for cutting.
natural
Collectors sometimes look for rare colors of corundum besides rubies and sapphires.
natural