Crossword clues for chrysoberyl
The Collaborative International Dictionary
Chrysoberyl \Chrys"o*ber`yl\, n. [L. chrysoberyllus, Gr. ?; chryso`s gold + ? beryl.] (Min.) A mineral, found in crystals, of a yellow to green or brown color, and consisting of aluminia and glucina. It is very hard, and is often used as a gem.
Wiktionary
n. (context mineral English) A vitreous mineral, often pale green, a mixed oxide of aluminium and beryllium with the chemical formula berylliumaluminum2oxygen4, used as a gemstone.
WordNet
n. a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone
Wikipedia
The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula Be Al O. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". Despite the similarity of their names, chrysoberyl and beryl are two completely different gemstones, although they both contain beryllium. Chrysoberyl is the third-hardest frequently encountered natural gemstone and lies at 8.5 on the hardness scale, between corundum (9) and topaz (8).
An interesting feature of its crystals are the cyclic twins called trillings. These twinned crystals have a hexagonal appearance, but are the result of a triplet of twins with each "twin" oriented at 120° to its neighbors and taking up 120° of the cyclic trilling. If only two of the three possible twin orientations are present, a "V"-shaped twin results.
Ordinary chrysoberyl is yellowish-green and transparent to translucent. When the mineral exhibits good pale green to yellow color and is transparent, then it is used as a gemstone. The three main varieties of chrysoberyl are: ordinary yellow-to-green chrysoberyl, cat's eye or cymophane, and alexandrite. Yellow-green chrysoberyl was referred to as "chrysolite" during the Victorian and Edwardian eras, which caused confusion since that name has also been used for the mineral olivine (" peridot" as a gemstone); that name is no longer used in the gemological nomenclature.
Alexandrite, a strongly pleochroic (trichroic) gem, will exhibit emerald green, red and orange-yellow colors depending on viewing direction in partially polarised light. However, its most distinctive property is that it also changes color in artificial (tungsten/halogen) light compared to daylight. The color change from red to green is due to strong absorption of light in a narrow yellow portion of the spectrum, while allowing large bands of more blue-green and red wavelengths to be transmitted. Which of these prevails to give the perceived hue depends on the spectral balance of the illumination. Fine-quality alexandrite has a green to bluish-green color in daylight (relatively blue illumination of high color temperature), changing to a red to purplish-red color in incandescent light (relatively yellow illumination). However, fine-color material is extremely rare. Less-desirable stones may have daylight colors of yellowish-green and incandescent colors of brownish red.
Cymophane is popularly known as "cat's eye". This variety exhibits pleasing chatoyancy or opalescence that reminds one of the eye of a cat. When cut to produce a cabochon, the mineral forms a light-green specimen with a silky band of light extending across the surface of the stone.
Usage examples of "chrysoberyl".
Then Avelyn and the remaining guard began selecting and collecting stones: the giant crystal amethyst, a rod of graphite, a small but potent ruby, and several others, including turquoise and amber, celestine and a tiger's paw, a chrysoberyl, or cat's eye, some gypsum and malachite, a sheet of chrysotile, and a piece of heavy magnetite.
The Makahomian catseye chrysoberyls had enriched both the Linyaari and Hafiz immeasurably, and the improvements on both MOO and Vhiliinyar were the result of that influx of wealth.
The Heloise is being boarded by thieves — the dancers have stolen the catseye chrysoberyls and are hijacking Andina's ship — with you in it.
As soon as the security chief appeared, Becker said, "I know you said your business with Andina was urgent, Commander, but I've just been notified that the belly dancers have raided Hafiz's store of catseye chrysoberyls, which has got to be more urgent.
The blessed Singing Stones might have been singing their hearts out long before this for all we know, but they never tried to sing loudly enough to be heard until the sacred catseye chrysoberyls of Makahomia were deposited in close enough proximity that the Singing Stones felt the emanations from their fellow sacred stones.
Your relationship to the stones is what caused them to set up such a racket once they made contact with the chrysoberyls and hence, with us?
Grimalkin froze the lot of them, turning them all temporarily Solid, and used his own tractor beam to extract the chrysoberyls from the war memorial.
We have been deputized by House Harakamian to arrest you for the theft of the chrysoberyls from the Moon of Opportunity.
She also sent him clear images of the pile of chrysoberyls lying in somewhat scattered disarray on the bridge of Grimalkin's vessel.
Harakamian had looked at the catseye chrysoberyls, as if they each had discovered, or rediscovered, a treasure beyond price.
As they were entering orbit on their way to join your crew, they picked up the homing signal from the stolen catseye chrysoberyls and located them in the ruin of a ship heretofore undiscovered outside Aari's cave.
The cat's-eye stones the local people were wearing-which were more properly called chrysoberyls - were not only beautiful and sacred, according to Nadhari's lesson on Makahomian culture, but also very useful in the mining and terraforming industries across the universe.
These were lensed with chrysoberyls the size of the Condor's viewport.
The size of our chrysoberyls is so rare, I am told, that their like is unknown in the universe.
These were used in the galactic mining of the cat's-eye chrysoberyls, and should also serve to either poison the priests or drive them out of the stronghold, where they would perish in the waterless vastness of the desert.