Tom Chatham joined his father in 1965, at Chatham Research Laboratory. His father, Carroll Chatham, was a crystal growing pioneer. Tom was involved in the first Flux ruby research followed by many sapphire colors and flux grown alexandrite. In 1993, Chatham Created Gems Inc. announced their introduction of Created Diamonds. White diamonds were achieved and introduced at the 1996 JCK Show in Las Vegas, followed by pink, yellow and blue diamonds. Tom is now the CEO of the corporation, employing over 300 people worldwide.