well, priti gupta has been to a lab in india to find out more.the diamond—polishing capital of india. the busy streets here are full of sellers peddling these precious gems. but i heard about one company that's looking to innovate by no longer extracting diamonds from the earth but, rather, growing them in a lab. greenlab started as a company importing diamonds that would then be cut, shaped and polished. but a few years ago, it shifted to a process that they say was faster, cheaper and more sustainable. and as with many processes, it all starts with a single seed. butjust how do you grow a diamond? sanket, where are we? what is this room all about? so, this room is our heart of greenlab as it is the growing unit, so we have seeds which are 7mm, 8mm, 20mm, up to 20mm, 30mm as well. seeds are basically diamonds. it's a single—crystal diamond plate. so, once the plate is placed in the reactors, we start to give it the right temperature, pressure and the right gases. these plasma reactors essentially mimic the conditions that are needed for natural