CHECK OF PRECIOUS STONES Russian patent published in 2017 - IPC B07C5/342 G01N21/87 B07C5/38 B07C5/36 

FIELD: measuring equipment.

SUBSTANCE: device contains a vacuum nozzle for extracting precious stones from a plurality of precious stones; a conveying mechanism for conveying the nozzle and the precious stone held to one or more measuring places; a measuring system comprising a plurality of measuring devices mounted near one or more measuring places and configured to measure one or more precious stone properties. At least one of the plurality of measuring devices is located in proximity to at least one of mentioned measuring places with the ability to measure at least one of mentioned precious stone properties which is held by the nozzle. The conveying mechanism is configured to sequentially deliver the precious stone held by the nozzle to a plurality of measuring devices receiving the precious stone at controlled times and in controlled places. The device comprises a control system operatively associated with a vacuum nozzle and with a measuring system and configured to provide a precious stone approach to a single or each measuring place in a time known to the measuring system and a positive pressure application system for separating the precious stone from the nozzle in the drop zone. A method for sorting precious stones, a method for studying precious stones and a nozzle for holding a precious stone are also proposed.

EFFECT: fast, reliable and efficient process of sorting stones.

36 cl, 8 dwg