This is what my Etsy listing said about this piece of glass that ruined my life:
Moldavite genuine specimen from near Maly Chlum, central Bohemian Region, Czech Republic. Moldavite a tektite or an impact glass, a naturally occurring glass that is believed to have formed in the heat of an asteroid impact appx 15 million years ago.
Our Moldavite is authentic and comes to us directly from a trusted source in Czech Republic who we have been working with for many years. Lechatelierite inclusions are present, and cannot be faked.
Want to know more about real vs. fake Moldavite? https://www.gia.edu/gems-gemology/spring-2015-gemnews-moldavites-natural-fake