Dictionary
laz•u•rite
Pronunciation: (laz'u-rīt", lazh'u-), [key]—
n.
a mineral, sodium aluminum silicate and sulfide, Na
5Al
3Si
3O
12S
3, occurring in deep-blue crystals, used for ornamental purposes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.