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these beauties form with the highest clarity in the natural world
Locality: Yaogangxian Mine
unearthed only rarely and many years apart
the agate layer determines the majority of the geode’s color
almost black
Uruguay Amethyst Heart AM1285 Small these beauties form with theLocality: Cataln Grande, Artigas Department, Uruguay Dimension: Weight: About 160 million years ago, when tectonic plates were rifting Africa and South America apart as the Atlantic Ocean opened, one of the worlds great flood basalt events was occurring. Basalts flowed from the rift, producing stratified lava flows thousands of feet thick in Brazil and nearby Uruguay. Within these flows, gas bubbles and lava tubes created cavities that were first