Sapphire is a precious gemstone, a form of the mineral corundum,
consisting of aluminium oxide with trace amounts of elements such
as iron, titanium, chromium, copper, or magnesium.
Color: Blue, Yellow, Black, Purple, Green, White, Grey, Pink, Orange, Brown
Birthstone zodiac sign: Virgo
Associated month: September
Hardness (Mohs Hardness scale): 9