Abstract: The present disclosure provides a fully automatic gemstone polishing robot. An aspect of the present disclosure provides an automatic gemstone polishing robot comprising: a gemstone polishing unit, comprising a gemstone holding unit for supporting a gemstone in contact with an abrasive surface, and configured to polish said gemstone in a plurality of iterations based on a feedback signal; an image capturing unit to capture, in one or more of the plurality of iterations, at least one image of the gemstone; and an image processing unit, which when executed by one or more processors, analyzes said at least one image of the gemstone with respect to one or a plurality of gemstone parameters, wherein the image processing unit is further configured to compare the one or a plurality of analyzed gemstone parameters with one or a plurality of pre-determined gemstone parameters to generate the feedback signal to be transmitted to the gemstone polishing unit.