Ruby signifies passion and unbridled, unrestrained love, making a pair of ruby earrings a perfect Valentine's day gift. Opal is a treasured gem all over the world. A symbol of hope, purity, and love, opal earrings make an elegant and luxurious gift. The unique icy blue color of aquamarine looks ideal with any complexion and eye color, making a pair of aquamarine earrings a perfect gift.