Let's be blunt: the majority of "moldavite" sold online is fake. Genuine moldavite is a tektite — natural glass formed by a meteorite impact roughly 15 million years ago — found only in a small region of the Czech Republic, mainly southern Bohemia and Moravia. Finite supply plus a viral popularity spike created exactly the conditions counterfeiters love, and molded green glass now floods marketplaces. Here's how to tell the difference.
1. Texture: Sculpted, Not Shiny
Real moldavite spent millions of years being etched by acidic groundwater, which carved its surface into fine wrinkles, grooves, and flow-line sculpturing — sharp, intricate, and slightly matte. Fake moldavite is molded from melted glass, and it shows: a glossy, "wet-looking" surface with soft, rounded texture that looks like it was poured (because it was). The shiny wet look is the single most reliable tell.
2. Color: Muddy Olive, Not Emerald
Genuine moldavite ranges from muddy olive to deep bottle green, often uneven when backlit. Fakes tend toward a vivid, uniform, almost emerald green — prettier than the real thing, which is exactly the problem. If the green looks like a gemstone ad, be suspicious.
3. Inclusions: Bubbles Are Good Here
Moldavite breaks the usual rule. In most crystals, gas bubbles mean glass — but moldavite is natural glass, so genuine pieces contain gas bubbles and, critically, lechatelierite: wire-like, wavy strands of pure silica glass visible under magnification. Lechatelierite cannot be convincingly reproduced in molded fakes and is considered a diagnostic feature. A completely clean, inclusion-free interior is a warning sign.
4. The Duplicate Test
Nature never repeats. Scroll the seller's other listings: if two "unique" specimens share the same outline and surface pattern, they came out of the same mold. Counterfeit operations reuse molds constantly — this catches them fast.
5. Price Reality
Czech collecting sites are increasingly restricted and supply genuinely shrinks every year, so real moldavite commands serious per-gram prices — and they've risen steadily. A large, sculpted, vividly green piece for a few dollars does not exist in the real market. Deep discounts aren't a deal; they're a diagnosis.
6. Provenance
Reputable dealers state the locality (Chlum, Besednice, and other Bohemian sites are famous), sell by gram weight, and photograph every piece individually. Certificates help, but a seller's overall honesty matters more — the same sellers faking moldavite fake the certificates too. Learn the full verification toolkit in our mineralogical authenticity guide, and read the deeper story of the stone in our complete moldavite guide.
More in this series: how to tell if amethyst is real, real vs fake malachite, natural vs heat-treated citrine, and identifying real turquoise. For verified one-of-a-kind material, browse our Collector's Edition and one-of-a-kind specimens, or read about the world's rarest minerals. Free U.S. shipping on orders over $150.
Frequently Asked Questions
Does real moldavite have bubbles?
Yes — moldavite is the exception to the "bubbles mean fake" rule, because it is natural glass. Genuine pieces contain gas bubbles and wavy lechatelierite strands. It's the glossy molded surface, not bubbles, that exposes fakes.
Is shiny moldavite always fake?
Naturally sculpted moldavite has a matte to softly glossy surface with sharp etched detail. A uniformly wet-looking, poured-glass shine with rounded texture indicates a molded fake. (Note: some genuine moldavite is faceted or polished for jewelry — in that case judge by inclusions and provenance instead.)
Where does real moldavite come from?
Only from the Czech Republic — primarily southern Bohemia (sites like Chlum and Besednice) and Moravia — the strewn field of a meteorite impact about 15 million years ago. "Moldavite" from anywhere else is not moldavite.
Why is moldavite so expensive?
A single impact event created a finite supply, collecting areas are increasingly restricted, and demand spiked after the stone went viral. Shrinking supply against rising demand pushes per-gram prices up year over year — which is exactly why the fake trade is so aggressive.
