The Agate gemstone comes in a variety of colors and is nature's gift to mankind. Agate is the most common variety of chalcedony quartz that forms in concentric layers in a wide variety of colours including black, gray, brown, reddish, green, pink, blue, and yellow from transparent to opaque. All colors are seen in this wonderful ornamental gem. You will find banded agate, moss agate, a fascinating white or milky agate that looks as though it actually has black, brown, or green moss growing within; eye agate, which has an eyeball effect; or plume agate, which looks like it's filled with beautiful feather plumes etc. Agate is a relatively inexpensive stone except for some varieties with unusual banded or scenic markings. Agate is considered a protection stone. It is believed to attract strength and offer protection from bad dreams, stress and the draining of energy. Because agate has been known and regarded around the world for thousands of years, its beneficial and healing properties are diverse and almost innumerable.