If you are shown a document on a diamond that has the (4c s) included in the document, but is being referred to as a (diamond certificate) this is a diamond grading report. You are competing with jewelry retailers whose entire business is selling on eBay so they are experts at writing the descriptions (often with exaggerated quality), taking impressive pictures and shipping their items. With jewelry stores often marking up prices over 100%, your share is likely to be less than half of the selling price.
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality The ideal cut diamond is a very precise mathematical equation, where diamond proportions and angles are cut to optimize the diamond's superlative optical properties, in particular it's high refractive index and color dispersion, to create a diamond of unequaled beauty with perfect balance of brilliance and fire. In layman's terms, the diamond is cut to make it the most beautiful diamond so it retains its intrinsic value.
Color Diamonds of I color are right in the middle of near colorless category. Experienced eye should be able to notice the presence of color. When mounted, I color diamonds will appear colorless to the most people representing great balance between price and perfection.
Clarity The stones of SI2 clarity have inclusions which are fairly easy to see under a loupe with 10X power magnification. Such inclusions may be visible to an unaided eye depending on their location. SI2 clarity diamonds of G or H color look nearly perfect when mounted. For those looking for near perfection these sure come close.