And indeed, Juhl’s rock sculptures rarely live to see that 20-minute mark. Every one of his creations is disassembled in short order: Some collapse on their own or are blown over after a few ...

Marble is another hard rock. It has an attractive texture and colour and it can be cut and polished. Because of this, it is used to make floor tiles and wall tiles. Some statues are made from ...

Beneath any surface artistry, a porcelain bowl or marble statue is basically clay or rock. And these 'man-made rocks' can be geologically analyzed just like any other rock. Using a technique ...