Lab grown diamonds are diamonds created in laboratory conditions by replicating the essential geological processes that convert carbon to diamond in nature. The result is a diamond that is chemically, optically and physically identical to a geological diamond but born in controlled laboratory environment.
No. Even an expert jeweler using traditional jewelers tools is unable to definitely tell the difference.
That being said, not all lab grown diamonds are the same and there are some inferior diamond crystals that contain heavy color tinges and crystal structure dislocations that can make it more obvious to a trained professional. That is why we recommend that all lab grown diamond purchases are done at a reputable local jewelry store with an assistance of a professional jeweler.
No. As we are recreating a complex geological process some of the conditions that cause earth mined diamonds to have variations in color and clarity cannot be controlled and hence create variations in lab grown diamonds as well.