Quartz and feldspar are commonly found together in granite and gneiss.
The quartz content of granite is varied.
Granite is an igneous rock. It is commonly formed from the following minerals. Quartz, potassium and Plagioclase Feldspars and Biotite Mica.
It depends on the granite or quartz you choose but generally granite is slightly cheaper.
Diamond is not typically found in granite, as diamonds are formed deep within the Earth's mantle under high pressure and temperature. Granite is an igneous rock composed mainly of quartz, feldspar, and mica, which do not typically contain diamonds.
In the volcano/magma chamber, different minerals that make up granite, (feldspar, quartz, etc.) mix to form grainy, large crystals of the different minerals. That is how granite is formed.
rock salt and conglomerate
Quartz is silicon dioxide (SiO2). Granite is a rock containing many minerals and chemical entities; but granite contain also an important percentage of quartz.
Quartz will probably be found in most igneous and metamorphic rocks. Granite is a classic example of a rock with quartz in it. Search for images of "granite." Quartz sandstone is another rock practically made entirely up of quartz.
Granite is an intrusive igneous rock (formed from the slow cooling of magma underground), the major component of the continental crust, coarse grained, and composed of quartz along with a variety of feldspar minerals and micas.
12 percent on a mineral composition table
Granite has feldspar, quartz, biotite.