DeBeers

N.W. Ayer began the marketing efforts for DeBeers. They held the account for 57 years, so they obviously produced great work. It is quite possible that "A Diamond is Forever" is one of the most famous slogans of all time (according to AdAge it is #6 on the top 100). DeBeers began this campaign in 1938, and it still has this same slogan today. Here is some of the work that N.W. Ayer produced for DeBeers:

The Debeers account then moved to JWT. The agency still continues the "Diamond is Forever"slogan. Many ads today depict the same scenes that were used in the N.W. Ayer days. The advertising for Debeers has also been able to take on a very simple approach to its advertising. Because the brand has been built so big, the boldly simple work is still effective. Here is some of the work that JWT produced for DeBeers: