With a hardness of 9 on the Mohs scale, Sapphire is harder than any other gemstone except a diamond. The trouble with traditional punching is that the procedure can misshape the form of the jewelry, resulting in the article having to be reworked after hallmarking is completed. For this reason, unfinished items of jewelry are often sent to the assay office where cuts-offs are taken and tested from the articles before hallmarking is executed.
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 Diamonds of E color are virtually colorless. Only less than 0.7% of natural diamonds have this color. Diamonds of this color grade will appear colorless even when observed face down against a flat white background.
Clarity Diamonds of VS1 clarity are very slightly included grade one. VS1 diamonds with tiny inclusions that are difficult to locate. Only a trained eye looking through a 10X loupe can pinpoint the inclusions in this category. The inclusions are nearly impossible to see with the naked eye. Excellent buy by all means.