Precious Stone Testing Apparatus and Method Thereof
AssigneeShenzhen Dikai Industrial Co., Ltd.
InventorsGary Bruce Peckham, Xiuling Zhu
Life of this patent
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Abstract
A precious stone testing apparatus includes a testing circuit housed in a case and tester probe unit extended from one end of the case. The testing circuit includes a UVA/UVC LED module adapted to emit UVA LED light and UVC LED light onto a stone being tested and a heating system adapted to apply heat to the stone being tested. By contacting the stone being tested with a testing end of a quartz light guide column which directs and focuses the UVA and UVC LED lights to the stone being tested, a thermal conductive tube encircling the quartz light guide column applies heat generated from the heating system to the surrounding of the stone being tested at the same time.
Claims20
A method of testing precious stone, comprising:
- (a) heating a metallic detection device and a heating system of a precious stone testing apparatus to a set temperature;
- (b) conducting a metal test by the metallic detection device to determine whether a stone being tested is gemstone or a setting around a perimeter of the stone being tested;
- (c) conducting a thermal conductivity test by applying heat through a thermal conductive tube, which is heated by the heating system and placed closed to the stone being tested, to the stone being tested to determine whether the stone being tested is gemstone or synthetic gemstone;
- and
- (d) conducting a UVA test and a UVC test by applying a UVA LED light generated from a UVA LED lamp and a UVC LED light generated from a UVC LED lamp to the stone being tested, which is arranged and extended in the thermal conductive tube and placed close to the stone being tested;
- and
- (e) analyzing tested data obtained in the UVA test and the UVC test to determine whether the stone being tested is natural diamond, moissanite or CVD/HPHT/TYPE IIa.
A precious stone testing apparatus, comprising:
- a case;
- and
- a testing circuit, housed in the case, comprising:
- a power source supplying electric power to the testing circuit;
- an optical system which comprises at least one UVA/UVC optical sensor and a quartz light guide column having at least one portion extended out of the case;
- a UVA/UVC LED unit configured to emit a UVA LED light and a UVC LED light which are directed and focused to a stone being tested, and that reflections of the UVA LED light and the UVC LED light after penetrating the stone being tested are guided by the quartz light guide column to the UVA/UVC optical sensor of the optical system;
- a heating system;
- and
- a thermal conductive tube, made of thermal conductive material and configured to be heated by the heating system, having at least one portion extended out of the case in such a manner that the quartz light guide column is arranged and extended in the thermal conductive tube to form a tester probe unit, so that by placing a testing end of the quartz light guide column close to the stone being tested, while the UVA LED light and the UVC LED light are directed and focused onto the stone being tested and the reflections of the UVA LED light and the UVC LED light penetrated through the stone being tested are guide and focused by the quartz light guide column to the UVA/UVC optical sensor, the thermal conductive tube, encircling the quartz light guide column, applies heat generated from the heating system to a surrounding of the stone being tested at the same time.
Dependencies are inferred from the claim text.