The gem in a citrine pendant is considered a harmonious, optimistic, and cheerful stone with the ability to brighten up our hearts darkest places 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. Opal symbolizes confidence, clarity, and calmness and is said to promote faith in oneself and hope for the future. Wear an opal pendant to capture these qualities.