After creating emeralds in 1938, laboratory grown rubies, alexandrites, and a variety of sapphires all came to fruition over many decades of research in the hands of Carroll Chatham. 

By duplicating the conditions deep within the Earth – the temperature, the pressure, and the chemical makeup, his laboratory succeeded in growing gemstones over a course of a year’s time. These gemstones possess the same physical, optical, and chemical properties as their mined counterparts. 

Today, Chatham is still recognized as the leader of laboratory-grown gemstone and diamond jewelry revered for its superior quality and everyday elegance. The company's unbeatable Lifetime Warranty and Certificate of Authenticity assure reliability and long-term value.