corundum
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Diamond defines a hardness of 10 and is actually about four times harder than corundum, which is 9.
From Textbooks ● Jan. 1, 2017
The Bronco mane and eyeball were created from orange sapphires while the head features pave-set diamonds and custom-cut corundum blue stone.
From Washington Times ● Jun. 12, 2016
It’s also a bonza industrial abrasive, and clear slices of synthetic corundum are used to make bullet-proof “glass.”
From Scientific American ● Apr. 14, 2012
Diamonds are a 10 and almost four times harder than corundum.
From BusinessWeek ● May 31, 2011
Of the less important minerals, Canada is the world’s chief producer of asbestos and corundum.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 2 "Camorra" to "Cape Colony" by Various
