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ZA200006794B - Method and associated apparatus for the standardized grading of gemstones. - Google Patents

Method and associated apparatus for the standardized grading of gemstones. Download PDF

Info

Publication number
ZA200006794B
ZA200006794B ZA200006794A ZA200006794A ZA200006794B ZA 200006794 B ZA200006794 B ZA 200006794B ZA 200006794 A ZA200006794 A ZA 200006794A ZA 200006794 A ZA200006794 A ZA 200006794A ZA 200006794 B ZA200006794 B ZA 200006794B
Authority
ZA
South Africa
Prior art keywords
gemstone
platform
light
data
data processor
Prior art date
Application number
ZA200006794A
Other languages
English (en)
Inventor
Lalit K Aggarwal
Original Assignee
Imagestatistics Inc
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 Imagestatistics Inc filed Critical Imagestatistics Inc
Publication of ZA200006794B publication Critical patent/ZA200006794B/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/87Investigating jewels

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
ZA200006794A 1998-05-28 2000-11-21 Method and associated apparatus for the standardized grading of gemstones. ZA200006794B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/085,797 US6020954A (en) 1997-12-18 1998-05-28 Method and associated apparatus for the standardized grading of gemstones

Publications (1)

Publication Number Publication Date
ZA200006794B true ZA200006794B (en) 2002-01-21

Family

ID=22194012

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA200006794A ZA200006794B (en) 1998-05-28 2000-11-21 Method and associated apparatus for the standardized grading of gemstones.

Country Status (8)

Country Link
US (2) US6020954A (fr)
EP (1) EP1082599A4 (fr)
JP (1) JP2002516992A (fr)
BR (1) BR9911207A (fr)
CA (1) CA2333547A1 (fr)
IL (1) IL139926A (fr)
WO (1) WO1999061890A1 (fr)
ZA (1) ZA200006794B (fr)

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EP1082599A1 (fr) 2001-03-14
US6020954A (en) 2000-02-01
JP2002516992A (ja) 2002-06-11
IL139926A0 (en) 2002-02-10
BR9911207A (pt) 2001-02-13
EP1082599A4 (fr) 2002-08-21
WO1999061890A1 (fr) 1999-12-02
CA2333547A1 (fr) 1999-12-02
US6239867B1 (en) 2001-05-29
IL139926A (en) 2004-06-01

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