The Culet The culet looks like a point at the bottom of the diamond, but it is normally another facet, a tiny, flat polish surface. The Ceylon (Sir Lanka) sapphires are a very pleasing blue, but are a less deep shade than the Burmese or Kashmir, instead tending yo fall more on the pastel side. We are also seeing many Australian sapphires, which are often a dark blue, but with a slightly green undertone, as are those from Thailand; both sell for much less per carat.
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 I color diamonds are almost colorless. I color will be slightly detectable to the experienced eye. When cut to ideal proportions, the diamond will produce a warm intensity. I color diamonds are excellent value for the budget conscious and allow to save money or get a bigger diamond or a better cut.
Clarity Inclusions and external blemishes in diamonds of SI1 clarity may be easy to spot under 10X power magnification. Location of the inclusions greatly affect their visibility to the naked eye. SI1 diamonds of good color produce as good of a sparkle as the more expansive VS graded stones of lower color. Excellent bargains may be fond in this category.