We frequently get asked this question because most people ARE NOT Geologist and just do not know what granite actually is!
Below are links to a few reputable web sites that will provide you with an answer to this question:
Granite: What is Granite? What is Granite Used For?
Granite: What’s In a Name?
Examples of various Granites:

BASIC GRANITE: Butterfly Beige or Ferro Gold

EXOTIC GRANITE: Yellow River

EXOTIC GRANITE (SCHIST): Desert Dream a.k.a. Magma, Magma Gold, or Sedna
