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.
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
For example apatite is about three times harder than fluorite and diamond is three times harder than corundum.
From Textbooks ● Jan. 1, 2015
This crystalline aluminum mineral is called corundum, and people have been wearing it with pride for thousands of years.
From Scientific American ● Apr. 14, 2012
Diamonds are a 10 and almost four times harder than corundum.
From BusinessWeek ● May 31, 2011
At the top of f are two slide rests a a, one on each end, carrying emery or corundum wheels w, and the roll r, which rests in the bearings b, rotates between these emery wheels.
From Modern Machine-Shop Practice, Volumes I and II by Joshua Rose
