AGS Laboratories Announces New Cut Grade Issue Dates

AGS Laboratories has announced that it will start issuing a cut grade for princess-cut diamonds by the end of the first quarter of 2005. It will be followed by the new round-brilliant cut-grade system to be released in the second half of 2005. The science supporting the new cut-grade system reflects AGS Laboratories' advancement from a proportion-based to a performance-based cut-grade system. In the new cut-grade system, all 58 facets of a diamond are measured in three dimensions rather than two. The measurements are used by a ray tracing computer program to trace light rays traveling through a diamond. The program shows the quantity and quality of the light being returned to the viewer. In addition to proportion, symmetry, and polish, AGS Laboratories will also consider brightness, dispersion, leakage, contrast and spread in assigning the final cut grade. The zero cut parameters for
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