With over 400 million Bibles in print, the New International Version is the ideal combination of reliability and readability. This fully revised and updated edi
Pull on your miner's helmet and take a world tour to learn how diamonds, rubies, and other valuable gems are found, where major mining sites exist for these jew
A bright new package design highlights our perennially popular hands-on kit that introduces curious children to the fascinating science of geology. In the illus
Gem hunting can be like playing the geological lottery. You may spend hours performing backbreaking work and pay fees for access to mine tailings only to find a