An apparatus for examining an object having a means for holding an object coated with a diffusing material, a first light source for illuminating the object from behind to create a silhouette, a second light source for illuminating a point, line or grid on the object, a camera disposed in front of the object and at ...

A diamond marking attachment comprising a laser, for a 3D diamond mapping apparatus, and a method of laser marking on a diamond surface, via a material that is capable of interacting with a laser beam either in a way that this material is permanently changed and turns into a char mark that adheres to the diamond sur...

A computerized system kit and method for producing an accurate 3D Model of a gemstone by obtaining an original 3D model of an external surface of the gemstone; imaging at least one selected junction with only portions of its associated facets and edges disposed adjacent the junction the location of the junction bein...

A diamond marking attachment comprising a laser, for a 3D diamond mapping apparatus, and a method of laser marking on a diamond surface, via a material that is capable of interacting with a laser beam either in a way that this material is permanently changed and turns into a char mark that adheres to the diamond sur...

A diamond marking attachment comprising a laser, for a 3D diamond mapping apparatus, and a method of laser marking on a diamond surface, via a material that is capable of interacting with a laser beam either in a way that this material is permanently changed and turns into a char mark that adheres to the diamond sur...

A diamond marking attachment comprising a laser (10), for a 3D diamond mapping apparatus (1), and a method of laser marking on a diamond surface (P), via a material that is capable of interacting with a laser beam either in a way that this material is permanently changed and turns into a char mark that adheres to th...

A system for the inspection of a precious stone, including an energy transfer system for changing the temperature of the stone, at least one imaging device imaging the stone and outputting a thermal map of the stone, an image processing unit utilizing the thermal map to determine regions having changed emission in t...

An apparatus for determining the shape of a gemstone, including irregularities on its surface, is provided, The apparatus comprises a platform adapted to support the gemstone, a scanning system adapted to provide geometrical information concerning the three-dimensional convex envelope of the gemstone, an illuminatio...

An apparatus for examining an object having a means for holding an object coated with a diffusing material, a first light source for illuminating the object from behind to create a silhouette, a second light source for illuminating a point, line or grid on the object, a camera disposed in front of the object an...

There are provided method for detecting inclusions in a gemstone comprising illuminating the gemstone by successively producing illumination patterns on the gemstone each selected so as to simultaneously provide an internal uniform illumination of one or more predetermined light exit regions of the gemstone and each...

A computerized system, kit and method for producing an accurate 3D-Model of a gemstone by obtaining an original 3Dmodel of an external surface of the gemstone; imaging at least one selected junction with only portions of its associated facets and edges disposed adjacent the junction, the location of the junction bei...

A system for the automatic grading of a cut/polished gemstone (SUT) includes an enclosure with a stage for mounting the cut/polished SUT. The enclosure further includes one or more sources of broadband visible (BBV) light, the sources of BBV light being controllable by a programmable controller; an image sensor for ...

Systems and methods for grading a gemstone including its clarity are presented. An image capturing device disposed to capture images along a line of sight; a holder to support the gemstone thereon; a manipulator arm, carrying the holder, configured to rotate along a roll axis, and allow for rotation of the holder al...