Sisters Jessica Sander and Jen Majkrzak look for agates in a Carlton County gravel pit. Their dad was an avid agate collector whose home is filled with vases, and even a lamp, of agates. He took ...

Mineral deposits can create markings that look like forests or mountains, and experts say each stone is distinctive. By Jill Newman When Tarun Adlakha displays a dendritic agate, with its finely ...

THIS exquisite image captures the astonishing internal structure of crazy lace agate, also known as Mexican agate. This section of the mineral is some 65 million years old. Agate is related to quartz ...

By Dr. Lori Verderame For those of you who are shopping for someone special in your life this month, here are some tips that will help you get the most for your money when buying colored ...