Sapphire

Sapphire is a beautiful gemstone that is known for its vibrant blue color. It is a type of corundum, a mineral that is found in various parts of the world, but is most commonly found in Sri Lanka and Madagascar. Sapphire has a Mohs hardness of 9, making it a very durable gemstone that is suitable for use in jewelry. It is also the birthstone for the month of September, making it a popular choice for those with a September birthday. Overall, sapphire is a stunning gemstone that is highly prized for its beauty and durability.