Patent ID: 7755072

Claim:
A non-destructive method of testing a gemstone, said method comprising the steps of: a. providing an X-ray non-destructive system for obtaining a model of a gemstone comprising: i. a holder adapted to carry said gemstone, ii. at least one emitter adapted to provide an X-ray beam directed to said gemstone, iii. at least one detector adapted to detect the said beam passed through said gemstone, iv. displacing means adapted to displace said gemstone relative to said beam in a predetermined manner, v. a processor adapted to process and display said detected data such that a two-dimensional topographic pattern of said gemstone is obtained, said system further comprises a spatial filtering device, said device comprises comprising a plurality of plane elements arranged parallel to a non-scattered beam and is adapted so as to block said rays that are scattered by inclusions accommodated by in said gemstone and angularly propagated towards said detector; b. placing said gemstone on a said holder such that said gemstone to be tested is located in a path of said beam; c. passing said beam through said gemstone; d. radiating said gemstone by means of said emitter; e. scattering said beam on at least one inclusion accommodated in said gemstone; f. detecting said radiation passed through said gemstone by means of said detector; and g. processing said detection data produced in the step (f) such that said two-dimensional topographic pattern of said gemstone is obtained by means of said processor; wherein said method further comprises a step of filtering said scattered radiation out of said radiation passed through said gemstone.