There are sapphires in a surprising number of colors. There’s a brilliant yellow which is a real eye-catcher, especially in combination with diamonds.
Formula: Al2O3
Hardness: 9
Density: 3.90 – 4.05 g/cm3
Refractive Index: 1.760- 1.772 DR: 0.008
Color: Yellow, orange-yellow
Countries of Origin:
Sri Lanka, Madagascar, Tanzania, Thailand, Myanmar, Australia
Birthstone: September