Moldavite

Tektite

5.5Hardness (Mohs)

SiO₂ glassChemistry

2Known origins & mines

Green tektite glass born 14.8 million years ago when the Ries asteroid impact melted Bohemian terrain. Found only along the Moldau river basin in Czech Republic; genuine deposits are nearly exhausted, driving collector demand.

Known origins & mines

Chlum Moldavite Fields · Czech Republic

Active mining · Legendary locality

Primary moldavite fields from the 14.8-million-year Ries impact ejecta — genuine Czech tektite deposits approach exhaustion, fueling collect…

Besednice Hedgehog Beds · Czech Republic

Closed mine · Notable deposit

Besednice produced spiky "hedgehog" sculptural moldavites prized above all others — beds exhausted, making fine hedgehogs five-figure collec…