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    APPARATUS AND METHOD FOR THE SEPARATION OF SMALL DIAMONDS
    5.
    发明公开
    APPARATUS AND METHOD FOR THE SEPARATION OF SMALL DIAMONDS 审中-公开

    公开(公告)号：EP4357764A1

    公开(公告)日：2024-04-24

    申请号：EP22202990.2

    申请日：2022-10-21

    申请人： Swiss Gemmological Institute SSEF

    发明人： KRZEMNICKI, Michael S. ,  Chalain, Jean-Pierre ,  Phan, Ly ,  Xaysongkham, Julien ,  Speich, Laura ,  Remonnay, Emmanuel ,  Cartier, Francis ,  Pilorget, Thierry ,  Bonin, Alexandre

    IPC分类号： G01N21/87

    CPC分类号： G01N21/87

    摘要： Present invention relates to an apparatus (100) and a method for automatically sorting small colourless natural diamonds from colourless diamond imitations and colourless synthetic diamonds, wherein the diamonds are generally polished and have a mean diameter of less than 3.8 mm, the apparatus comprises
    - A collecting vibrating vessel (10) where the diamonds are being fed thereto, comprising a vibrating plate (12) for jolting the diamonds;
    - A first detection means (20) for detecting the position of the diamonds, wherein at least one diamond having a table down position is determined;
    - A second detection means (30) for submitting the diamond to a first test (32) of a first Raman Shift Detection (32a) or a Photoluminescence Detection (32b), followed by a second test of a second Raman Shift Detection (34a) or a Photoluminescence Detection (34b);
    - A transportation means (40) for picking up the diamond having a table down position, and placing the diamond to the second detection means (30) before sorting out (95) the diamonds
    wherein when the first test (32) and the second test (34) are Raman Shift Detections (32a, 34a), the diamond is further submitted to a third test of Photoluminescence Detection.

    MULTI-FUNCTIONAL PRECIOUS STONE TESTING APPARATUS AND METHOD THEREOF
    8.
    发明公开
    MULTI-FUNCTIONAL PRECIOUS STONE TESTING APPARATUS AND METHOD THEREOF 审中-公开

    公开(公告)号：EP4202422A1

    公开(公告)日：2023-06-28

    申请号：EP22195979.4

    申请日：2022-09-15

    申请人： Shenzhen Dikai Industrial Co., Ltd.

    发明人： ZHU, Xiuling ,  PECKHAM, Gary Bruce

    IPC分类号： G01N21/87

    摘要： A multi-functional precious stone testing apparatus includes a portable housing and a testing unit. The portable housing includes a portable housing having a hand-held casing and a probe casing extended from a front end of the hand-held casing. The testing unit housed in the hand-held casing includes a UV light emission unit, a UV light reflecting and guiding unit, and a UV light receiving unit. The UV light emission unit produces and emits both a long-wave UV light and a short-wave light, so as to allow the UV receiving unit to sense the UV lights reflected and refracted by a testing object for determining various qualities and distinguishing types of diamond of the testing object.