Moldavite Rava Ring - Size 6 (US)
Locale: Chlum, Czech Republic
Size: 27.8 x 18.7 x 16.9 mm
State: Intact, undamaged 
.
Set in 925 sterling silver so will tarnish over time but can be removed with the polishing cloth provided
.
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.