Sapphire has always been associated with the sacred and divine. A sapphire pendant is said to bring serenity and purity to the wearer. Yellow gold brings out the bronze and golden colors inside a smoky quartz pendant. White gold will highlight the brown and grey tones of the gem. Either way, you can't go wrong. Tanzanite is the gem of fortune and luck. A tanzanite pendant is said to ease stress and free one from bad habits.