- a sapphire, cut cabochon, exhibiting asterism in the form of a colorless six-rayed star.
Origin of star sapphire
First recorded in 1795–1805
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for star sapphire
Like the inside of a pearl; like the inside of a star-sapphire; like a rainbow at twilight.A Northern Countryside
Was I making game of you when you discovered me looking out of your star-sapphire yesterday?Lilith
At other times the star-sapphire which Burton carried on his person proved a valuable auxiliary—and convinced where words failed.The Life of Sir Richard Burton
Perhaps your hands would look wrong with a ring, unless I could find a star-sapphire set in silver.Sinister Street, vol. 1
The typical asteria is the star-sapphire, generally a bluish-grey corundum, milky or opalescent, with a star of six rays.
- a sapphire showing a starlike figure in reflected light because of its crystalline structure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012