Abstract: Examples of automated gemstone feeding are described. According to an example, a gemstone feeding machine includes a conveyor belt assembly to feed holders carrying gemstones. The conveyor belt assembly can include a plurality of conveyor belts in two sets positioned parallel to each other and the two sets can move in opposite directions. Each belt in one set can be positioned alternately with respect to each belt in the other set. The assembly can include a fixed guiding plate at a first end of the conveyor belts and a detachable guiding plate adjacent to the loading assembly at a second end of the conveyor belts. The fixed guiding plate and the detachable guiding plate each comprises a plurality of transition profiles in alignment with immediately adjacent conveyor belts.

Abstract: A gemstone detachment assembly includes a rotatable member which can temporarily attach thereto a gemstone holder detachably holding a rough gemstone exhibit a motion with the rotatable member for a partial path of rotation of the rotatable member. A detachment tool can be positioned in a path of the moving rough gemstone and can detach the rough gemstone from the gemstone holder. A magnet positioned in proximity of the rotatable member can temporarily hold holder onto the rotatable member. The magnet can generate a magnetic field which can hold the holder when in a first portion of the path of rotation of the rotatable member and can release the holder in a second portion of the path of rotation of the rotatable member.

Abstract: The feeding unit includes a base plate, and a cross member. The base plate receives the gemstones, affixed to the gemstone holders. The cross member is an automated moving member, configured such that a home position of the cross member coincides with a pre-defined point on the base plate. Accordingly, the gemstone, along with its gemstone holder, when received at the base plate is picked up by the cross member, specifically, by the first gripping member and the second gripping member, by a detachable contact established between the gemstone holder and the cross member, such that the cross member transfers the gemstone holder positioned on the base plate to a pre-defined position on the feeding unit.

Abstract: Examples of automated gemstone feeding are described. According to an example, a gemstone feeding machine includes a conveyor belt assembly to feed holders carrying gemstones. The conveyor belt assembly can include a plurality of conveyor belts in two sets positioned parallel to each other and the two sets can move in opposite directions. Each belt in one set can be positioned alternately with respect to each belt in the other set. The assembly can include a fixed guiding plate at a first end of the conveyor belts and a detachable guiding plate adjacent to the loading assembly at a second end of the conveyor belts. The fixed guiding plate and the detachable guiding plate each comprises a plurality of transition profiles in alignment with immediately adjacent conveyor belts.

Abstract: Systems and methods for mobile gemstone identification are described herein. According to an embodiment, a mobile gemstone identification system (100) includes a gemstone holder (104, 202, 302, 402) to hold a gemstone (102) and includes an optoelectronic assembly (106). The optoelectronic assembly (106) includes an illumination device (108) to illuminate the gemstone (102) by causing radiations to be incident on the gemstone (102). Further, the optoelectronic assembly (106) further includes a screen (110) to form a pattern indicative of an optical response of the gemstone (102), in response to the radiations being incident on the gemstone (102). According to an aspect, the screen (110) is formed as having a plurality of regions (114, 116) having different masses, and the pattern is to be formed substantially on a region (114) having greater mass than other regions (116).