The coin in the photogrpah is a penny,
Several years ago when Cz (cubic zirconia) was first invented, it was heralded as the best diamond look-alike ever made by man. Even today, full-page magazine adverts offer 'amazing' imitation diamonds - they are Cz. Now YOU can amaze your friends by owning your very own brilliant-cut Cz. They will be convinced it is diamond!