Moldavite 16.16g
Locale: Dolní Chrášťany, Czech Republic
Size: 53.3 x 24 x 14.2 mm
State: Intact with a 1mm reflection on the side. Invisible without close inspection 
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Moldavite is a rare natural glass formed about 15 million years ago when a meteorite struck the Nördlinger Ries in Germany. The heat from the impact melted the surface rock and sent it into the sky where it cooled as it fell back to earth as green tektite.