Agate is a banded form of finely-grained, microcrystalline Quartz. The beautiful color patterns and banding make this translucent gemstone very unique. Agates may have many distinctive styles and patterns, however each Agate is unique in its own habit. No two Agates are the same. Agates can be found in a variety of colors including white, blue, red ,green, yellow, orange, brown, pink, purple, grey, black, banded, and multicolored.