We are always using professional or industrial grade 3D printers based on various 3D printing technologies:
The most commonly used FDM 3D print, stereolithography - a very detailed DLP 3D print, SLS (powder) 3D print, metal print, multi-jet fusion 3D print offering to print very difficult objects, ceramics 3D print or micro metal 3D print.
You can choose from a wide variety of colours and your printout can be transparent or biocompatible.