Welcome to Kestenbaum  & Weisner

Welcome to Kestenbaum  & Weisner, your 3rd generation family jeweler on Fifth Avenue in New York City’s Diamond district. Diamond dealer, Philip Weisner has built K&W on a strong foundation of acquiring and selling quality diamonds and jewelry combined with exceptional customer service. Philip’s approach is hands-on and he is especially involved in every stage of production and care. The process is marked by respect and the desire for your complete satisfaction.


Client service is our number one priority. Our aim is to assist you in finding that special piece or creating your own masterpiece. Our knowledgeable staff has been chosen in the same way. Our efforts have resulted in our customers becoming lifelong clients as well as friends. Our goal is your complete satisfaction.











See what goes on behind the scenes at K&W.

Read the feature story on Philip, New York’s Diamond District & Jewish Tradition