Articles on Zirconia

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A satellite image of the Clearwater Lakes, the site of two large asteroid impacts that struck Earth about 290 million years ago. (NASA Earth Observatory)

Cubic zirconia only forms under extreme temperatures, like those produced when an asteroid impacts Earth

Cubic zirconia, a popular diamond substitute, only occurs naturally under extreme conditions. Finding cubic zirconia in craters reveals parts of the Earth’s history.
A collection of raw Libyan desert glass. Linnas/Shutterstock

How we solved the mystery of Libyan desert glass

The origin of Libyan desert glass found scattered in an Egyptian desert has puzzled scientists for years. But a new look at the glass structure reveals its meteoric formation.
Diamond or zirconia? Apart from the price, it can be hard to tell these two gems apart. from www.shutterstock.com

A disappointing earring, and the world’s hottest rock: zirconia

Zirconia is a mineral with a crystal structure made from the elements zirconium and oxygen. It looks pretty like diamond, but is only worth a fraction of the value.

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