Jean-Marc Lieberherr says man-made diamonds, above, are not the same as gems sourced from the earth, and in some cases have the same carbon footprint as ‘natural’ stones. Bloomberg 
Jean-Marc Lieberherr says man-made diamonds, above, are not the same as gems sourced from the earth, and in some cases have the same carbon footprint as ‘natural’ stones. Bloomberg 

Questioning the real value of lab-grown diamonds