Vltavín
or moldavite is a mineral of tektite group of natural glasses, it means asteroid origine (a comet or asteroid fall down about 15 milion years ago), and can be found mostly in South Bohemia region or South-West Moravia.
Beautiful green color and inteesting natural shapes quickly gains popularity world-wide. Faceted stones can be also very impressive, it was very popular in early 1900s, in Art Nouveau period.