GB2295227B - Method and apparatus for classifying diamonds - Google Patents

Method and apparatus for classifying diamonds

Info

Publication number
GB2295227B
GB2295227B GB9601274A GB9601274A GB2295227B GB 2295227 B GB2295227 B GB 2295227B GB 9601274 A GB9601274 A GB 9601274A GB 9601274 A GB9601274 A GB 9601274A GB 2295227 B GB2295227 B GB 2295227B
Authority
GB
United Kingdom
Prior art keywords
diamonds
classifying
classifying diamonds
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB9601274A
Other versions
GB9601274D0 (en
GB2295227A (en
Inventor
Martin Phillip Smith
Christopher Mark Welbourn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gersan Ets
Original Assignee
Gersan Ets
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
Priority claimed from GB929210674A external-priority patent/GB9210674D0/en
Application filed by Gersan Ets filed Critical Gersan Ets
Priority to GB9601274A priority Critical patent/GB2295227B/en
Publication of GB9601274D0 publication Critical patent/GB9601274D0/en
Publication of GB2295227A publication Critical patent/GB2295227A/en
Application granted granted Critical
Publication of GB2295227B publication Critical patent/GB2295227B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Landscapes

  • 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)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
GB9601274A 1992-05-19 1993-05-19 Method and apparatus for classifying diamonds Expired - Fee Related GB2295227B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9601274A GB2295227B (en) 1992-05-19 1993-05-19 Method and apparatus for classifying diamonds

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB929210674A GB9210674D0 (en) 1992-05-19 1992-05-19 Method and apparatus for examining an object
GB9601274A GB2295227B (en) 1992-05-19 1993-05-19 Method and apparatus for classifying diamonds
GB9310337A GB2267147B (en) 1992-05-19 1993-05-19 Method and apparatus for examining an object

Publications (3)

Publication Number Publication Date
GB9601274D0 GB9601274D0 (en) 1996-03-27
GB2295227A GB2295227A (en) 1996-05-22
GB2295227B true GB2295227B (en) 1996-07-17

Family

ID=26300902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9601274A Expired - Fee Related GB2295227B (en) 1992-05-19 1993-05-19 Method and apparatus for classifying diamonds

Country Status (1)

Country Link
GB (1) GB2295227B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1016537A3 (en) 2004-11-10 2007-01-09 Wetenschappelijk En Tech Onder METHOD FOR DISTINCTING COLORLESS AND ALMOST COLORLESS DIAMONDS AND ARRANGEMENT FOR CARRYING OUT THIS METHOD.
GB2516297A (en) * 2013-07-18 2015-01-21 De Beers Centenary AG Measuring parameters of a cut gemstone
EP3729063B1 (en) 2017-12-21 2022-02-09 Università Degli Studi Di Milano - Bicocca System and method for spectroscopy analysis of diamonds

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291975A (en) * 1979-10-03 1981-09-29 Scientific Gem Identification, Inc. Apparatus for determining the color characteristics of a gem
GB2244329A (en) * 1990-04-24 1991-11-27 Gersan Ets Identifying gemstone type.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291975A (en) * 1979-10-03 1981-09-29 Scientific Gem Identification, Inc. Apparatus for determining the color characteristics of a gem
GB2244329A (en) * 1990-04-24 1991-11-27 Gersan Ets Identifying gemstone type.

Also Published As

Publication number Publication date
GB9601274D0 (en) 1996-03-27
GB2295227A (en) 1996-05-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040519