Sterling Silver Celtic Knot Chatham Emerald Earring. Celtic knots are a form of sacred geometry that symbolize the interconnectedness of all things. They represent the eternal web and the continuous cycling of our connection to each other. This wonderful pair of earrings are symbolic of two different paths or souls intertwining with each other. These Earrings are 1.25 inch in length. They are hand casted in sterling silver and set with a created emerald.