System and Method to Automatically Generate Valuable Cutting Plans for a Rough Gemstone

A method to automatically generate valuable cutting plans for a rough gemstone comprising the steps of:

• having a rough gemstone;
• having an apparatus equipped with
• a first source of light;
• a first camera;
• a movable and rotatable gemstone holding fixture;
• a rectangular chamber having transparent walls and containing a medium having a refractive index that substantially neutralizes the refractive index of the rough gemstone to be evaluated;
• a second source of light;
• a second camera;
• a software governed image processing device;
• having a software governed image analysing device;
• placing the rough gemstone in the said rotatable gemstone holding fixture;
• capturing using the said first camera using illumination by the first source of light multiple external images of the rough gemstone while the rough gemstone is being rotated and storing the said multiple external images in the said software governed image processing device;
• generating utilizing the said software governed image processing device a three-dimensional external image of the rough gemstone using the said stored multiple external images of the rough gemstone;
• immersing the rough gemstone inside the said medium;
• capturing using the said second camera using the second source of light multiple internal images of the rough gemstone while the rough gemstone is being rotated and storing the said multiple internal images in the said software governed image processing device;
• generating utilizing the said software governed image processing device three-dimensional images of impurities, if any, inside the rough gemstone using the said stored multiple internal images of the rough gemstone;
• combining using the software governed image processing device the generated three-dimensional external image of the rough gemstone with the generated three-dimensional images of internal impurities of the rough gemstone if any;
• identifying using the said software governed image processing device correct locations, shapes and sizes of the internal impurities and external imperfections of the rough gemstone, if any;
• computing using the said software governed image analysing device three-dimensional cutting plans and selecting the most valuable cutting plan therefrom to cut the rough gemstone depending on the characteristics of the rough gemstone analysed by the said software governed image analysing device considering the correct locations, shapes and sizes of the internal impurities and external imperfections of the rough gemstone, if any, as identified by the software governed image processing device while giving the Operator an option to manually choose a cutting plan different from the automatically selected most valuable cutting plan.