Aquamarine
Iolite
Blue Sapphire
Spinel Blue
Tanzanite
Turquoise Blue
Tourmaline Blue
Tourmaline Paraiba
Lapis
Pope Innocent III decreed in the twelth century that the ring of a Bishop of the Catholic Church should be set with a Sapphire. It was felt that this stone held the virtuous qualities necessary to its esteemed position.