Trillion-cut Chatham emerald in an abstract 14 KT gold pendant with 2 small diamond accents. 
 
By duplicating the conditions within the Earth, including temperature, pressure and chemical makeup, laboratories can grow gemstones. These laboratory-grown, Chatham gemstones are physically, optically and chemically identical to their mined counterparts. The only difference is that the gem growing process takes place above the ground, rather than below.