The term ‘eye clean’ (or ‘eye clear’) means that a gemstone has no flaws visible to the naked eye when viewed from the top position (not upside down) at a distance of about 6” to 12” from your face. A diamond that is eye clean, for example, will have inclusions and blemishes under magnification, but they will not be visible to the unaided eye. A gemstone’s clarity classification is based on how ‘eye clean’ it is.
