How to Identify a Real Moldavite and Spot Fakes

Updated for 2026 · Buyer’s guide

“How do I know if someone is selling real moldavite, or trying to trick me with a fake?”

It is the question we are asked more than any other, and for good reason. Real moldavite formed about 15 million years ago when a meteorite slammed into what is now southern Germany, scattering molten green glass across a small corner of the Czech Republic. It is the only place on Earth it is found, the supply shrinks every year, and prices keep climbing. That combination has flooded the internet, and especially the big marketplaces, with cheap green glass sold as the real thing.

The good news: once you know what to look for, telling a genuine Czech moldavite from a fake takes about sixty seconds. This guide walks you through the exact tests gem dealers use, with close-up photos of both, so you never overpay for a bottle-green bead again.

REALFAKE

The 60-second real vs fake comparison

Before the detailed tests, here is the cheat sheet. If a stone fails two or more of these, walk away.

The 5 tests that expose a fake moldavite

1. The texture test (the most reliable)

This is the single best tell. Genuine moldavite has a wild, natural surface, full of sharp ridges, wormy channels, and pits, created as the molten glass cooled and was etched over millions of years. No two are alike. A close look (a 10x loupe helps) reveals depth and randomness that glass simply cannot fake.

2. The bubble test

Hold the stone to a bright light. Real moldavite can contain tiny bubbles, but they are usually few, irregular, and elongated. Manmade glass is typically full of perfectly round air bubbles, sometimes dozens, evenly distributed. A constellation of round bubbles is a near-certain sign of glass.

3. The colour test

Real moldavite is a muted, organic green, think moss, forest, or olive, and it is gently translucent rather than glassy-clear. Fakes are often a vivid, uniform, “emerald soda bottle” green that looks a little too cheerful. If the colour feels artificial, it usually is.

4. The feel and temperature test

Moldavite is a glass (a tektite), so it is light and smooth, but a real specimen carries character, slight unevenness, and warms slowly. A fake bead feels mass-produced and lifeless. Many long-time collectors also report a distinct tingling or warmth when holding a genuine stone; trust your instinct alongside the physical tests.

5. The price and source test

Economics rarely lie. Genuine Czech moldavite now sells for roughly $8 to $35+ per gram, and museum-grade Besednice pieces go far higher. If a 20-gram “moldavite” costs a few dollars with free shipping from overseas, it is glass. Always ask the seller exactly where the stone was mined. A real dealer will say the Czech Republic and often name the locality. Vague answers, or “China”, mean walk away.

What real Besednice moldavite looks like

Besednice, in southern Bohemia, produces the most prized moldavite of all, the famous “hedgehog” specimens with dense, spiky, sculpted surfaces. These are the gold standard for texture and the easiest to authenticate by eye. Every stone we sell is genuine Czech moldavite, hand-verified, and shipped with a certificate of authenticity that names its locality.

Where the fakes come from

Most fakes are mass-produced green glass sold through large overseas marketplaces, often photographed to look rough and “natural”. The tells are always the same: round bubbles, glossy uniform surfaces, suspiciously low per-gram prices, and no verifiable source. When in doubt, compare against the texture macro above.

Frequently asked questions

Still unsure about a stone you are looking at? Send us a photo and we will tell you honestly whether it looks genuine. And when you are ready for the real thing, every piece in our collection is certified authentic Czech moldavite.