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

They range 5 to 6 on the Mohs hardness scale. Iron supplanting calcium and ... Spodumene, a lithium aluminum silicate formed in lithium-bearing granite pegmatites, is found at the Midnight Owl ...

Agate countertops are known for their beauty. The gemstone adds a unique look to any room. However, there are a few downsides ...

While beryl is found in granite and pegmatite dikes ... beryllium include a low specific gravity of 1.84, a hardness of 6 on the Mohs’ scale, and the highest melting point among light metals ...