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. An amethyst pendant is said to bring spirituality, tranquility and peace to the wearer. It is even said to help one succeed in business. Blue Topaz is known as the gem that has the power to improve one’s communication skills. A blue topaz pendant may make you a more eloquent and confident speaker.