from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A brown to colorless mineral, ZrSiO4, which is heated, cut, and polished to form a brilliant blue-white gem.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral occurring in tetragonal crystals, usually of a brown or grey colour and consisting of silica and zirconia.
- n. A crystal of zircon, sometimes used as a false gemstone.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral consisting predominantly of zirconium silicate (Zr2SiO4) occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia. A red variety, used as a gem, is called hyacinth. Colorless, pale-yellow or smoky-brown varieties from Ceylon are called jargon.
- n. an imitation gemstone made of cubic zirconia.
from The Century Dictionary and Cyclopedia
- n. A mineral occurring in tetragonal crystals of adamantine luster and yellowish to brownish or reddish color: its hardness is somewhat greater than that of quartz.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent
The sands are called zircon sands because they contain sand-sized mineral zircon grains.
Red zircon, which is rare, is properly called "_hyacinth_."
This double nitrate has a specific gravity of 4.7963, therefore such a stone as zircon, which is the heaviest known, will float in it.
It is probably identical with the lighure of (Exodus 28: 19) The Jacinth or hyacinth is a red variety of zircon, which is found in square prisms of a white, gray, red, reddish-brown, yellow or pale-green color.
In general the mineral is recovered on a commercial scale only from placers, where it has been concentrated along with other dense, insoluble minerals such as zircon, garnet, ilmenite, and sometimes gold.
Iluka rose 11% after it said it expects strong price increases from its customers for titanium dioxide and zircon.
Ad-venture capitalist, explorer and discoverer of heaps of gold, copper, oil, timber and rare earths like zircon, Joshua Fink, 32, has traveled on cold war Russian helicopters to coal mines in Mongolia, gone a mile down in South African gold mines and traveled to copper mines in the middle of the jungle in the Congo.
Mary K.V. Hodges, Paul Karl Link, C. Mark Fanning, 2009, The Pliocene Lost River found to west: Detrital zircon evidence of drainage disruption along a subsiding hotspot track
You may afford less zircon-encrusted hummers thinking that way, but you will be cooler.
He pointed at me with a single long finger bearing a long ring of yellow zircon.