Blue sapphires make up the trifecta of gemstones along with rubies and emeralds. Durable, royal, and timeless are blue sapphires. Belonging to the family of corundum, they are one of the hardest gemstones being 9.0 on the Mohs scale. Sapphires symbolize truth, sincerity, and constancy and is a perfect gift for your significant other. These stud earrings are also designed to be simple and classy. It can be worn everyday with any outfit.