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Homo erectus may have deliberately selected rocks embedded with fossils and crystals to craft their hand axes.

Archaeologists in Israel unearthed prehistoric hand axes that Homo erectus crafted from stones including fossils and crystals ...

Göttingen University researcher Fiorella Arduin Rode working in open pit mine of the study area, Los Catalanes mining district, northern Uruguay. Along with Ametista do Sul in southern Brazil, these ...

Lovely day for a bit of rockhounding. Found agates, geodes, and the mild realization that we’re holding something older than ...

Geodes can be kind of ugly on the outside, but when cracked open, you can find something beautiful. Here's how to make your own. n 12 eggs n Water n Borax n Food coloring STEP 1: Crack each egg near ...

Geodes tend to be more rounded than the rocks surrounding them. They are also harder, because the minerals within make geodes harder than the rock they are encased in. Geodes are usually spheroidal, ...