zircon

IPA: zˈɝkʌn

(uncountable) A mineral occurring in tetragonal crystals, usually of a brown or grey colour and consisting of silica and zirconia.
(countable) A crystal of zircon, sometimes used as a false gemstone.

Examples of "zircon" in Sentences

Red zircon, which is rare, is properly called "_hyacinth_."
The sands are called zircon sands because they contain sand-sized mineral zircon grains.
Iluka rose 11% after it said it expects strong price increases from its customers for titanium dioxide and zircon.
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.
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
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.
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.
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.