The celtic knot is an ancient symbol of the journey of life. With no beginning and no end, the knot represents the timeless nature of our spirits and the world we live in. A Emerald celtic knot combines these concepts with the spiritual attributes of the Emerald . A pair of emerald earrings are a timeless and classic accessory. You can choose from genuine emerald, or more affordable lab-created emerald. 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.