Turns out (much to the chagrin of geologists in the housing market), those countertops are likely neither granite nor all the same type of rock ... can use those skills to give a rock its proper name.

Quartz, on the other hand, doesn’t require any type of sealant or annual maintenance. If you ask us, that’s one of its best perks. Mild soap and water is really the only thing you should use ...

Pure quartz, or “rock crystal” from Brazil. Source: Didier Descouens, CC BY-SA 4.0 Pick up a rock almost anywhere on Earth and chances are pretty good that there’s at least some quartz in it.

We're after pure gold, but rock that contains gold also includes lots of other materials such as quartz, calcite ... a physical mixture of metals, or a type of alloy. Using mercury is a pretty ...

There are lots of types of rock and each type has different properties and uses. For example, some are strong and hard but others are soft and sandy. Some rocks are harder than others. For example ...

Evidence for the use of rock crystal - a rare type of perfectly transparent quartz which forms in large hexagonal gems - has occasionally been found at prehistoric sites in the British Isles, but ...