Carroll Chatham began to build his own gem laboratory in his parent's basement when he was 12. After many years of trial and error, Chatham discovered how to duplicate the conditions deep within the earth: the temperature, the pressure and the chemical makeup, and was able to successfully grow gemstones over the course of a year’s time. All Chatham lab-grown gemstones possess the same physical, optical and chemical structure as their mined counterpart. Chatham is still recognized as the leader of laboratory-grown gemstones. The company’s Lifetime Warranty and Certificate of Authenticity assure that Chatham Lab-Grown gems will continue Carroll’s legacy for generations to come.