Why are Sapphires so Popular in Jewelry? Sapphires, valued for their stunning blue color and durability, are among the most common gemstones used in jewelry. Just to find out why are sapphires so popular in Jewelry? We'll look at the history and characteristics of sapphires, their use in jewelry, and how to pick the ideal sapphire jewelry piece. What are Sapphires?  Sapphires are a type of corundum mineral, a variety...