The egg is made of mauveenamel, with gold trim. On the exterior is a twisted ribbon trellis design of rose-cut diamonds, as well as a portrait diamond on the top inscribed "1906". Another portrait diamond on the other end once held the Imperial monograph.[1] The "surprise" that came inside the egg is a miniature gold and silverswan on a "lake" of aquamarine. By winding a gear beneath one of the wings, the swan's mechanical neck and wings move.[1] In Russia, the swan is considered a symbol of family life and the permanence of the bond of marriage.