1. Granite: This is a light-colored, coarse-grained rock with large crystals of quartz, feldspar, and mica. It forms deep underground where magma cools slowly, allowing the crystals to grow large.

2. Diorite: This is a medium-grained, grayish to dark gray rock with crystals of plagioclase feldspar, hornblende, and pyroxene. Like granite, it forms deep underground where magma cools slowly.