Moldavite Pendant 
Locale: Unknown, Czech Republic
Size: 35 x 19 x 7mm
State: multiple reflections under 1mm on the face & a significantly chipped on the back, shown in photos
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Paired with a black necklace cord and care instructions. Wrapped in 925 sterling silver  so the metal will tarnish over time but can be removed with the polishing cloth provided
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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.