IT1214796B - Dispositivo per giudicare la brillantezza delle pietre preziose tali come diamanti o simili - Google Patents

Dispositivo per giudicare la brillantezza delle pietre preziose tali come diamanti o simili

Info

Publication number
IT1214796B
IT1214796B IT8403645A IT364584A IT1214796B IT 1214796 B IT1214796 B IT 1214796B IT 8403645 A IT8403645 A IT 8403645A IT 364584 A IT364584 A IT 364584A IT 1214796 B IT1214796 B IT 1214796B
Authority
IT
Italy
Prior art keywords
brilliance
diamonds
judge
similar
precious stones
Prior art date
Application number
IT8403645A
Other languages
English (en)
Other versions
IT8403645A0 (it
Inventor
Tsuyoshi Shigetomi
Kazuo Inoue
Original Assignee
J D M Ltd Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by J D M Ltd Co filed Critical J D M Ltd Co
Publication of IT8403645A0 publication Critical patent/IT8403645A0/it
Application granted granted Critical
Publication of IT1214796B publication Critical patent/IT1214796B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/87—Investigating jewels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8803—Visual inspection
IT8403645A 1983-12-27 1984-12-06 Dispositivo per giudicare la brillantezza delle pietre preziose tali come diamanti o simili IT1214796B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983205012U JPS60109041U (ja) 1983-12-27 1983-12-27 ダイヤモンド等の宝石の輝きの判定器具

Publications (2)

Publication Number Publication Date
IT8403645A0 IT8403645A0 (it) 1984-12-06
IT1214796B true IT1214796B (it) 1990-01-18

Family

ID=16499983

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8403645A IT1214796B (it) 1983-12-27 1984-12-06 Dispositivo per giudicare la brillantezza delle pietre preziose tali come diamanti o simili

Country Status (7)

Country Link
US (1) US4647194A (it)
EP (1) EP0147002B1 (it)
JP (1) JPS60109041U (it)
AU (1) AU3059884A (it)
CA (1) CA1224062A (it)
DE (1) DE3475348D1 (it)
IT (1) IT1214796B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763986A (en) * 1986-11-24 1988-08-16 Sego Marvin A Illuminated jeweler's loupe
DE3802535A1 (de) * 1987-05-21 1989-02-23 Sattler Hans Eberhard Vorrichtung zur betrachtung insbesondere von rohedelsteinen in einer immersionsfluessigkeit
JPH06103268B2 (ja) * 1989-02-17 1994-12-14 金作 山下 ダイヤモンド等の宝石の輝き観察器具および該器具を用いた宝石の撮影方法
EP0442065B1 (en) * 1990-02-15 1997-07-23 Kinsaku Yamashita Instrument for observing jewels brilliance as diamond, and method of taking photographs with said instrument
US5966673A (en) 1997-01-10 1999-10-12 Diamond Technologies, Inc. System and method for computerized evaluation of gemstones
US6980283B1 (en) 1997-12-18 2005-12-27 Imagestatistics, Inc. Method and associated apparatus for the standardized grading of gemstones
US6020954A (en) 1997-12-18 2000-02-01 Imagestatistics, Inc. Method and associated apparatus for the standardized grading of gemstones
US6473164B1 (en) 2000-02-16 2002-10-29 Gemological Institute Of America, Inc. Systems, apparatuses and methods for diamond color measurement and analysis
US6665058B1 (en) * 2000-05-24 2003-12-16 Eightstar Diamond Company, Inc. Device for judging symmetry, brightness, and efficiency of light return in precious stones
JP4663855B2 (ja) * 2000-08-02 2011-04-06 株式会社ほほえみブレインズ 装飾用宝石の鑑定方法
US7251619B2 (en) 2000-09-01 2007-07-31 Garry Ian Holloway Computer implemented method, computer program product, and system for gem evaluation
US7260544B1 (en) * 2000-10-12 2007-08-21 Gemological Institute Of America, Inc. System and methods for evaluating the appearance of a gemstone
US6786733B2 (en) * 2002-10-15 2004-09-07 Overseas Diamonds Inc. Computer-implemented method of and system for teaching an untrained observer to evaluate a gemstone
US7336347B2 (en) * 2003-12-22 2008-02-26 American Gem Society Methods, apparatus, and systems for evaluating gemstones
US7355683B2 (en) 2006-03-24 2008-04-08 American Gem Society Systems and methods for evaluating and displaying the dispersion of a diamond or other gemstone
US7751034B2 (en) 2006-11-28 2010-07-06 American Gem Society Systems and methods for ray tracing
US9262284B2 (en) * 2006-12-07 2016-02-16 Lenovo Enterprise Solutions (Singapore) Pte. Ltd. Single channel memory mirror
US8498847B2 (en) * 2009-05-29 2013-07-30 Pnina Gelman Cut grading gemstones, evaluation and representation of symmetry and proportion

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA699724A (en) * 1964-12-15 M. Robinson Lytton Apparatus for photographing and/or viewing enlarged images of gems or the like
US1744485A (en) * 1925-02-21 1930-01-21 Gustave L Herz Method and means for the examination of jewels
US2494078A (en) * 1948-04-26 1950-01-10 Harry L Woodruff Apparatus for examining gems and crystals
US2742813A (en) * 1952-10-17 1956-04-24 Zeininger Henry Percy Projection apparatus for displaying precious stones
DE1958962A1 (de) * 1969-11-24 1971-05-27 Niro Atomizer As Regelventil
DE7016584U (de) * 1970-05-02 1971-12-16 Eickhorst Manfred Vorrichtung zur mikroskopischen reinheits- und/oder farbgraduierung geschliffener diamanten.
BE789234A (fr) * 1971-09-29 1973-01-15 Colorant Schmuckstein G M B H Procede et dispositif pour l'enregistrement des qualites de pierres de bijouterie

Also Published As

Publication number Publication date
IT8403645A0 (it) 1984-12-06
JPH035897Y2 (it) 1991-02-14
JPS60109041U (ja) 1985-07-24
AU3059884A (en) 1985-07-04
EP0147002A3 (en) 1986-04-30
EP0147002A2 (en) 1985-07-03
CA1224062A (en) 1987-07-14
EP0147002B1 (en) 1988-11-23
DE3475348D1 (en) 1988-12-29
US4647194A (en) 1987-03-03

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