Sapphire is considered one of the most important and most beautiful gemstones in the world. It is known for its characteristic blue color, the result of a mixture of oxides of aluminum, iron and titanium. Large sapphires are rare and have their own names, such as the "Midnight Star", a 116-carat black star sapphire.


Color: Blue in various shades, colorless, pink, orange, yellow, green, black and purple
Associated month: September
Moh's hardness: 9
Ethical origin: Australia, Sri Lanka, Myanmar, Thailand, USA...