Sapphire

The name sapphire is derived from the Latin word ““saphirus” and the Greek word “sapheiros,” both meaning blue. Some believe that the name sapphire is derived from its association with the planet Saturn. The name can be roughly be translated to mean “dear to the planet Saturn” in many different languages.
Sapphires are the most valuable and rarest blue colored natural gemstones. They are a highly desirable gemstone due to their beautiful royal blue color, hardness (second only to diamonds), durability, and luster (sparkle from light performance within the gemstone). In the gem industry, sapphire without any color prefix (such as blue sapphire) refers to the blue variety of the mineral Corundum. However, the term Sapphire encompasses all other gem varieties and colors of Corundum as well, except Ruby which is the red variety of Corundum, which has its own name.