There are many ways to keep the diamond clean. Although jewelry is manufactured, perhaps mass-manufactured, the materials used come out of the ground and are limited in supply. In short, jewelry advertising should be conservative.
Diamond Certificate
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 To most people G color diamonds will look absolutely colorless unless the diamonds of better color grade are used as a reference. Diamonds of G color grade offer an excellent trade off between diamond quality and affordability. GIA certified G color diamonds look exceptionally beautiful in platinum settings and make an excellent investment.
Clarity SI2 clarity diamonds are slightly included grade two. SI2 inclusions in diamonds are easily visible under 10x magnification. These inclusions may or may not be discernable to the naked eye depending on their location on the diamond, but these diamonds still presents an excellent value.