Agate chalcedony bead with image of JESUS

Hi.
I have a natural agate chalcedony bead with a natural image of Virgin Marry holding Jesus christ. The stone has been verified as Natural from a reputed gemstone laboratory in bangkok. As i dont have a working background in gems, i want your help to estimate worth of the rare stone and a platform for its best advertisement and sale. Picture of the stone and certificate are hereby attached.