Deep blue rose cut sapphires wrapped in 18kt gold with a sterling silver backing, post, and ear back.
"Sapphires are among the most durable naturally occurring elements in the world. The only natural item that can scratch a sapphire is a diamond, which has a 10 on the Mohs Scale. The durability of sapphires makes them an excellent choice for engagement rings and other jewelry you plan to wear every day.
Sapphires get their colors from trace elements in the mineral corundum. Classic blue sapphires contain iron and titanium, and trace elements of chromium can turn corundum pink, while more chromium turns it into a ruby."