Each and every of these three terms describe the exact same diamond which is duly considered as a diamond, just like the mine diamond is, carrying strictly the same physical, chemical and optical properties according to the independent international institutes (e.g. HRD, GIA, IGI). In France, the arrival of a gem quality lab grown diamond on the open market happened later to the law defining the gem appellations, decree  #2002-65 dated January 14th , 2002. According to article 4, this legal norm imposes the appellation “synthetic diamond” or “synthesis diamond”. It is a bit misleading as the term “synthesis” implies many components which is here not the case as the diamond is solely composed of one single element, (the) carbon. The FTC (Federal Trade Center) in the US has therefore taken out both the term “synthetic” for the man-made diamond and the term “natural” for the geological diamond. A diamond is a diamond regardless of its origin.