A sapphire is said to bring serenity and purity to the wearer. Wear a pink sapphire pendant for serenity and purity with a splash of fun and irreverence. Ruby is known as the gem of courage. Wearing a ruby pendant can help you get through the trials and tribulations of life. The gem in a citrine pendant is considered a harmonious, optimistic, and cheerful stone with the ability to brighten up our hearts darkest places