This is for random pull San Carlos Agate from Mexico. These have been hand graded by us to ensure quality cutting or cabbing material with great pattern and colors. Most sizes range from walnut sized to fist sized. Some smaller or larger ones may exist. If you are size sensitive, please be sure to check with us first and include a note within the order specifying the size you are seeking and we will do our best. The photos represent the actual grade but aren't exactly what you will get. To keep it fair, we cannot pick by color. San Carlos Agate is a stunning moss agate from near San Carlos, Mexico. This is a somewhat newer discovery, with gorgeous rough just now hitting the market.