from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An indigo-blue variety of tourmaline
from the GNU version of the Collaborative International Dictionary of English
- n. A variety of tourmaline of an indigo-blue color.
from The Century Dictionary and Cyclopedia
- n. In mineralogy, a variety of tourmaline of an indigo-blue color, sometimes with a tinge of azure or green. Also indigolite.
Sorry, no etymologies found.
The name indicolite which mineralogists give to these blue stones suggests the indigo-blue color which they afford.
Gem-blue indicolite crystals don't normally exceed 2 or 3 inches in length; these are 12 inches, possibly the largest in the world.