Study of the colour-tone variation of faceted stones depending on the number of facets of standard cuts for lighter-toned gems

The value of light coloured gems could be increased by improving colour-tone. This could be achieved by changing the number of facets of standard cuts. There are several other factors that affect the cut quality for instance symmetry, table size, girdle thickness, polish, proportions etc. This work will be focused on studying the optimum number of facets for light colour-toned stones of different sizes considering other parameters. This study is planned to be conducted by utilizing Gem Cad software initially and by cutting synthetic gemstones, then applying them to natural samples. Finally, a guideline will be prepared for lapidarists to improve the cut quality of light colour-toned gemstones.