About Sapphire

Sapphire is the second-hardest natural gemstone at 9 on the Mohs scale, making it durable enough for daily wear in engagement rings and bands. The classic deep blue is best-known, but sapphire occurs naturally in every color except red (which is classified as ruby) — including pink, yellow, peach, teal, and even color-changing varieties. Sapphire is the September birthstone and the traditional 45th-anniversary gem, and has been used in royal engagement rings for centuries (most famously Princess Diana's and Kate Middleton's).