GB2273770B - Method and apparatus for examining a gemstone - Google Patents

Method and apparatus for examining a gemstone

Info

Publication number
GB2273770B
GB2273770B GB9325534A GB9325534A GB2273770B GB 2273770 B GB2273770 B GB 2273770B GB 9325534 A GB9325534 A GB 9325534A GB 9325534 A GB9325534 A GB 9325534A GB 2273770 B GB2273770 B GB 2273770B
Authority
GB
United Kingdom
Prior art keywords
gemstone
examining
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
GB9325534A
Other versions
GB9325534D0 (en
GB2273770A (en
Inventor
Martin Phillip Smith
Robin Wyncliffe 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 GB909009132A external-priority patent/GB9009132D0/en
Application filed by Gersan Ets filed Critical Gersan Ets
Priority to GB9325534A priority Critical patent/GB2273770B/en
Publication of GB9325534D0 publication Critical patent/GB9325534D0/en
Publication of GB2273770A publication Critical patent/GB2273770A/en
Application granted granted Critical
Publication of GB2273770B publication Critical patent/GB2273770B/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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering
    • 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)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
GB9325534A 1990-04-24 1993-12-14 Method and apparatus for examining a gemstone Expired - Fee Related GB2273770B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9325534A GB2273770B (en) 1990-04-24 1993-12-14 Method and apparatus for examining a gemstone

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909009132A GB9009132D0 (en) 1990-04-24 1990-04-24 Method and apparatus for examining an object
GB9108733A GB2244329B (en) 1990-04-24 1991-04-24 Method and apparatus for examining an object
GB9325534A GB2273770B (en) 1990-04-24 1993-12-14 Method and apparatus for examining a gemstone

Publications (3)

Publication Number Publication Date
GB9325534D0 GB9325534D0 (en) 1994-02-16
GB2273770A GB2273770A (en) 1994-06-29
GB2273770B true GB2273770B (en) 1994-10-26

Family

ID=27265057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9325534A Expired - Fee Related GB2273770B (en) 1990-04-24 1993-12-14 Method and apparatus for examining a gemstone

Country Status (1)

Country Link
GB (1) GB2273770B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990007108A1 (en) * 1988-12-22 1990-06-28 Renishaw Plc Raman analysis apparatus
GB2256923A (en) * 1990-02-02 1992-12-23 De La Rue Thomas & Co Ltd Detection apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990007108A1 (en) * 1988-12-22 1990-06-28 Renishaw Plc Raman analysis apparatus
GB2256923A (en) * 1990-02-02 1992-12-23 De La Rue Thomas & Co Ltd Detection apparatus

Also Published As

Publication number Publication date
GB9325534D0 (en) 1994-02-16
GB2273770A (en) 1994-06-29

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Legal Events

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

Effective date: 20040424