Methods and devices for determining a location associated with a gemstone

The present disclosure relates to a computer-implemented method, devices and systems for determining a location associated with a gemstone. That method includes training a data model to detect a characteristic associated with a feature of interest pertaining to a gemstones surface. The training including the steps of providing a plurality of training images of gemstones, each training image associated with a label for a feature of interest pertaining to a given region of a gemstone type and an output indicating the specific gemstone type for the label. An input image of a gemstone for which a location is to be determined is then provided to the trained data model, wherein the data model detects at least one characteristic in the input image that corresponds to a feature of interest in the plurality of training images, determines that characteristic in the input image is associated with the label in the trained data model that corresponds to said feature of interest, identifies that the gemstone in the input image is of the specific gemstone type associated with said label, and finally provides an output representation of the respective feature of interest of the respective region for the identified specific gemstone type. Then, based on the output representation, a location on a corresponding region of the gemstone associated with the input image can be determined