Sapphire is a significant stone for many number-related milestones. Not only is it the birthstone for September, it is also the gem representing the 45th anniversary and the sapphire jubilee, which is the 65th anniversary of Queen Elizabeth II’s reign over Britain.
Sapphire is a sibling to the gemstone ruby. Both are varieties of the mineral “corundum”. Most people would say that the sapphire’s color is typically blue, but natural "fancy" sapphires also occur in many colors. There are also "parti sapphires" that show two or more colors. Just like ruby, sapphire is a 9 on the Moh’s hardness scale, which makes them ideal stones for daily wear due to their toughness.
