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
From a chemical analysis of a sample it has been calculated that the emery contained 52.4% of corundum, 32.1 of magnetite, 11.5 of tourmaline, 2 of muscovite and 2 of margarite.
From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various
