Address: 4833 Blackwell Street New York, NY 10001 Phone: 907-323-6852 Description: prestigious leader in the diamond industry). Mr. Lax brought thirty years of connections and expertise to the launch of this separate business, Diamond Lighthouse. His goal was to create a new, efficient, and Diamond Lighthouse online was created in 2013 by Moshe Lax, the CEO of Diamond Dynamics (a transparent way for you to sell your diamonds. This innovative online platform gives private jewelry owners access to the top diamond buyer market, all from the comfort of their home.