Large purple amethyst cake sparks wedding cake trend. Three different angles of Rachel Teufel's amethyst geode cake to show the depth of the design. Ali N Garrett Photography/Intricate Icings Cake ...

Two students in a chocolate making class at the Culinary Institute of America, they were inspired by a chocolate geode made by their professor, Chef Peter Greweling. For the uninitiated, geodes are ...

Any geode might make us wonder: What geologic forces form these hollows lined with crystals? But the Pulpí Geode, discovered in an abandoned Spanish mine, takes wonder to a different scale. One of the ...