zircon

In mineralogy, the term is applied to crystallised yellow or brown zircon.

Zircon is also the source of oxide of zirconium used in making mantles for certain incandescent lights.

Other minerals, except apatite, zircon and magnetite, are typically absent.

Jargon or Zircon is a stone having a superficial resemblance to a diamond.

Zircon is itself a species of mineral and is a silicate of zirconium.