Everything you ever wanted to know about fluorite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.
Colorado has a lot to offer gemologists and rock hunters. Before you visit, learn about Colorado gemstones as well as notable gem shows, museums, and clubs.
Gemstone cleavage is a break in a crystal along internal planes. Learn the science behind this and the difference between cleavage, fracture, and parting.