There are four areas to look for in a good diamond. Engraving and resizing of sterling silver rings is rather simple due to the ductility and relatively low melting point. However, make sure your jeweler understands the process of refinishing the ring and that they possess the necessary equipment to do so.
Diamond Certificate
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Diamonds of premium cut are almost as good as ideal. While nature determines the color and clarity of a stone, diamond cut is dependent solely upon the skill of the cutter. Premium cut diamonds may be close to the ideal cut proportions and look just identical. Most people cannot distinguish between the two. However, there is a slight difference in quality and reduction in price over ideal cut diamonds.
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 SI1 clarity are slightly included grade one. Inclusions in SI1 diamonds are easily identified through a strong loupe. Finding flaws in this category with the naked eye is difficult. The diamonds in this category maintain their integrity, depending on the location of the inclusions.