Moldaviteis a green meteorite glass that was formed during ameteorite impact14.5 mil. years ago in the area of Nördlinger (Bavaria, Germany) where thecrater of Rieswas formed (24 km in diameter). It is supposed that the meteorite was 1 km in diameter. The impact caused melting of sedimentary rocks which were hurled into the air, where they cooled and fell down in an area 250 km away, mainly in South Bohemia, the Czech Republic. The meteorite glass is named after the river Vltava (the Moldau) which flows through this region.
Original Moldavite from southern Bohemia, Czech Republic