All gemstones are rare; some are just harder to find than others. The stones in this series come from only one or two localities in the entire world. See pictures and read about eight rare gems at discovery.com.
Two new ultra-hard types of diamond have been found in a meteorite from Finland. The ultra-hard carbon crystals were created out of graphite under the intense heat and pressure of the meteorite impact, discovery.com says.
Mexico's Cave of Crystals stunned geologists when it was first discovered in 2000. The underground chamber contains some of the largest natural crystals ever found - some of the selenite structures have grown to more than 10m long, bbc.co.uk writes.
Norske geologer arbeider seg gjennom et
tre år langt prosjekt med kartlegging av
berggrunnen i Mosambik. Vi har besøkt
feltgeologer fra Norges geologiske undersøkelse
(NGU) i en brennhet teltleir i
Niassa-provinsen helt nord i landet.
