From the cover -
Gems should be more than just pretty baubles! Now they are! No more will gems become quick sources of cash, pawned off at the first opportunity. Harness the hidden secrets of the natural magic within gems and minerals and provide your players with magic items that are not only functional, but look great too!
Mineral Magic: Volume One is a short book for use with the Dungeons & Dragons, 3.5 Edition rules. Within you will find 31 new magic items, which can be made from 25 commonly found gems and minerals, including the Five Quartz Spheres and the Four Quartz Skulls.
Mineral Magic: Volume One contains descriptions of all 31 new items along with the necessary rules for creating and selling them to your players. Also included are 2 new feats that will allow your players to harness their own magical minerals.