A pair of created alexandrite earrings is like two gifts in one. Blue-green by day, and purple-red by night, the color change of this gem is sure to please. A pair of black onyx earrings are an affordable and elegant gift. Always appropriate and always in style, black onyx should be in every jewelry box. Tourmaline is known as the gem of love and commitment. Buy her a pair of pink tourmaline earrings to seal the deal!