2-3"
Random pull 
Your piece will be (if not the exact picture) quite similar!
 
Metaphysically, Agate has a lower intensity and vibrates to a slower frequency than other stones, but is highly regarded as a stabilizing and strengthening influence. The layered bands of microscopic quartz in Agate may appear delicate, they are actually very strong. Agate is excellent for balancing emotional, physical and intellectual energy, and in harmonizing yin and yang, the positive and negative forces of the universe.
The world of agates is a facinating and ever evolving places. There are hundreds, if not thousands of types of agates. They are found around the world. They bring a wonder and magic to the planet with their swirls of color bands.
 
Please see our Crystal Lore Section for more info on this amazing stone!