Birthstones are gemstones traditionally associated with each month of the year. For centuries, people have believed...

Opal is one of the most fascinating gemstones in the world because it forms differently from most minerals. Unlike...

Beryl is one of the most important gemstone mineral groups in the world. It includes several famous gemstones such as...

Sapphire is one of the world's most famous gemstones and a variety of the mineral corundum. Although blue sapphire is...

Ruby is one of the most famous and valuable gemstones in the world. It is the red variety of the mineral corundum and...

Apatite is one of the most important phosphate minerals on Earth and serves as the primary source of phosphorus used...