Sapphire has been believed to ward off evil, especially poisoning. Representing faith and purity, it is often used for engagement rings. It was commonly used in religious icons as early Christians associated Sapphire with purity and heavenly grace.
The deep blue Sapphire also has other colors, including pink, yellow, green and white.
Though uncertain as to its true origins, Sapphire’s name is thought to refer to Saturn.
Besides jewelry, Sapphire is also used in many industrial applications, including: infrared optical, high-durability windows, mechanical clockwork crystals and bearings, and solid-state electronics.
To help you in your search, checkout this Sapphire Buyer’s Guide