MatrixGold: MatrixGold by Gemvision is a software package for custom jewellery design. allowing the user total control to create and manufacture jewellery. The package includes- Rhino 6, Cycles rendering and Clayoo 2.6. ; Countersketch by Gemvision is a library of jewellery designs that are parametrically adjustable. The designs are fulfilled through Stullers CAD/CAM services. The program has over 1400+ designa and 500+ freehand parts. Countersketch makes jewellery design quick and easy.