"Flawless" describes any jewelry that has no flaws, cracks, inclusions, carbon spots, clouds, internal lasering, or other blemishes or imperfections of any sort when examined by a skilled jeweler.
Free from all internal inclusions or external blemishes under 10X magnification. Not to be confused with other diamond characteristics as this only refers to the clarity. Flawless gems because of their higher intrinsic value will generally have better than average cut to increase overall value though.
The recommended term for a diamond without external or internal flaws or blemishes of any description when viewed by a trained eye under efficient illumination and under a corrected magnifier of not less than ten power; binocular magnification under dark-field illumination is preferred. The American Gem Society advocates the use of the term "flawless" by its members, while at the same time denying them the use of the term perfect. The Federal Trade Commission permits the use of the term "flawless," but only if a stone conforms to its definition of the word perfect, without reference to make or colour.