No it isnt subjective, when you look into a diamond you can find imperfections and determine the grade, for example if you examine a diamond and find a single slight inclusion the size of a tip of a needle it means it's VS1 (Very Small Inclusion). You can also send a diamond to get it graded with a certificate
I need a master set......do they also have a master set for inclusions and such? Stone grading iss something I really want to learn as I get many gemstones from estates and sometimes they are real natural untreated stones but still a matter of me estimating grade to see if worth getting professionally graded
Similar way but if it has some imperfections near the edges, depending on the shape and size, they can be cut in a way that removes them and keeps only the clean part. if the center has imperfections its another story
I don't know about how this guy does it but there are machines that you can place it into and it will give you the exact color grade + tell you the UV rating as well
