Gemstones are minerals and rocks that are mainly processed in the jewelry sector because of their beauty. They can have a natural origin or been produced synthetically.
The diamond is not only the ladies best friend, but also the most valuable naturally occurring jewel and gemstone. Zirconia is a very popular, man-made stone that is often used as a diamond substitute, but it only costs a fraction of what you have to pay for a real diamond the same size.
Gemstones use natural materials such as amber, pitch coal or relatively small and nicely shaped fossils. Pearls and corals are also accounted as jewelry stones.