Ice Blue is a recycled crystal that uses a damaged crystal generated in the crystal manufacturing process. It is a special color created by innovative technology that considers limited resources and environmental impact without impairing quality. It is used to fasten it in a dedicated stone seat or to surround it with beads. (F ... Foil processed with Unf ... no foil processing) * The cut varies depending on the size, pp3 to PP13 is # 1028 and PP14 or higher is # 1088. Please note.