Trillion-cut Chatham alexandrite with 2 small round diamond accents in a 14 KT white gold bypass design. Size 5.
 
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.