Researchers from the University of Göttingen have investigated an intriguing geological phenomenon in Uruguay. These scientists are trying to uncover the mysteries behind the formation of amethyst ...

The three-meter tall amethyst geode - a hollow rock filled with amethyst crystals - is the main attraction at the Crystal Caves at Atherton, southwest of Cairns. But it's now missing a bit after a ...

People view the 12-foot tall amethyst geode from Uruguay hosted at the American Museum of Natural ... [+] History in New York. Thanks to geological surveys and detailed chemical analysis ...

In a recent article in Miner Deposita, researchers presented a comprehensive study of the amethyst and agate geodes in the ...

According to the IUGS, the deposit is “unique” because of its high number of mega-geodes and vast reserves as well as the gemstone quality and variety. Amethyst geodes (some over 16 feet high!) ...