This cut had a squarish or cushion shape (a rounded square or rectangular) and more facets than today's modern 58 facet diamond. Silver can be especially prone to tarnish, although almost all American sterling silver jewelry is coated with rhodium, an element of platinum, to prevent tarnishing. There are, in general, four methods of cleaning jewelry.
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 When mounted, G color grade diamonds will appear colorless except to the trained eye. G color may be noticeable when compared to diamonds of better grades. Diamonds of G color grade offer excellent value. For an excellent value in a diamond with no noticeable color to the unaided eye, G color diamond is the right choice.
Clarity Diamonds of SI3 clarity are on a borderline between slightly included and included diamonds. SI3 grade inclusions are almost obvious under 10x magnification. Inclusions in such diamonds may be noticeable to the unaided eye. However, when observing the diamond "face up" as it is mounted in a ring, the inclusions are usually not visible.