Stuck deciding between granite and marble for your new kitchen countertops? We asked some experts for their insight on ...

Unusually small burrows, i.e., tiny tubes that run through the rock in a parallel arrangement from top to bottom, were discovered in marble and limestone of these desert regions. The paper is ...

Magnesium makes the gold coloring, Perrin said, and small nuggets of pyrite ... Water seeps down from the rock that rests atop the marble seam, sometimes in vast amounts that can freeze when ...

Unusually small burrows, i.e., tiny tubes that run through the rock in a parallel arrangement from top to bottom, were discovered in marble and limestone of these desert regions. In the desert ...

So Italians carved a market in pietra dure, the craft of cutting and cementing small pieces of colourful marble for tabletops and cabinets. In Emilia, artisans found a way of making ground marble ...