from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A greenish chrysoberyl that appears red in artificial light, used as a gemstone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A form of chrysoberyl that displays a colour change dependent upon the light source, along with strong pleochroism.
from The Century Dictionary and Cyclopedia
- n. A variety of chrysoberyl found in the mica slate of the Ural mountains.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a green variety of chrysoberyl used as a gemstone
This mineral furnishes us the gem, alexandrite, which is notable for its power to change in color from green in daylight to red in artificial light.
An alexandrite laser is another red light laser, but it was a bit more efficient.
The next advancement in laser hair removal came in the form of an alexandrite laser.
For hair removal, I usually work with an alexandrite laser (which uses crystal to generate its laser light) or a diode (a super-conductor).
Lasers work with a monochromatic wavelength of light generated by liquid dye, crystals (like ruby or alexandrite), metal (a semiconductor like a diode), or gases (like CO2).
But then Henry found an alexandrite ring for me, and my magpie tendencies took over.
Ten years ago, the whole world lay at my feet, the ocean a glittering alexandrite skirt of sequined promise, the sky a ceiling stretched with an endless offering of lemon sorbet dawn, and me on my knees kissing your halo, of golden lights, Oh my golden boy. you were such an archangel of love, always filling my cradle of empty.
Short-run colors like alexandrite lavender and tangerine now command hefty prices in the collector market.
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His eyes, Joanna saw, were the clear green of alexandrite or peridot, deep-set and penetrating under silver-shot black brows.