Due to their striking green color, emeralds are highly prized as a beautiful addition to all kinds of jewelry. They have been used for thousands of years, espec

Due to their striking green color, emeralds are highly prized as a beautiful addition to all kinds of jewelry. They have been used for thousands of years, espec

Opals emit a rainbow of colors, which makes them perfect gems to place in stunning pieces of jewelry. How do opals go from raw stones to beautiful gems? Readers

How are diamonds formed? Where do they come from? The answers to these questions and more can be found in this exciting look at a popular gemstone. The science