Carved from a block of milky agate, this egg, mounted horizontally on a gold enameled base, is fashioned as a jewel casket. Individual fancy and lineal pattern in Renaissance effectiveness are skilfully combined in the applied gold trelliswork pointed by diamonds and rubies at the interstices; and in the play of emerald, ruby and lapis-blue enamels in scroll and conventionalized design.
A scalloped tracery in diamonds on the cover encloses a ruby-enameled medallion variously ornamented with repeated foliate motifs in colorful enamels and the year in diamonds. Gold heraldic lions' heads at either end terminate slender loop handles. The opening is secured by a tiny gold and diamond latch, while engagingly designed inner rims are developed in opaque white enameling and gold floral patterns.