An amethyst pendant is said to bring spirituality, tranquility and peace to the wearer. It is even said to help one succeed in business. 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.