GB2274165B - Method and apparatus for examining a diamond - Google Patents

Method and apparatus for examining a diamond

Info

Publication number
GB2274165B
GB2274165B GB9325532A GB9325532A GB2274165B GB 2274165 B GB2274165 B GB 2274165B GB 9325532 A GB9325532 A GB 9325532A GB 9325532 A GB9325532 A GB 9325532A GB 2274165 B GB2274165 B GB 2274165B
Authority
GB
United Kingdom
Prior art keywords
examining
diamond
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
GB9325532A
Other versions
GB2274165A (en
GB9325532D0 (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 GB9325532A priority Critical patent/GB2274165B/en
Publication of GB9325532D0 publication Critical patent/GB9325532D0/en
Publication of GB2274165A publication Critical patent/GB2274165A/en
Application granted granted Critical
Publication of GB2274165B publication Critical patent/GB2274165B/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
    • G01N21/62—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
GB9325532A 1990-04-24 1993-12-14 Method and apparatus for examining a diamond Expired - Fee Related GB2274165B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9325532A GB2274165B (en) 1990-04-24 1993-12-14 Method and apparatus for examining a diamond

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
GB9325532A GB2274165B (en) 1990-04-24 1993-12-14 Method and apparatus for examining a diamond

Publications (3)

Publication Number Publication Date
GB9325532D0 GB9325532D0 (en) 1994-02-16
GB2274165A GB2274165A (en) 1994-07-13
GB2274165B true GB2274165B (en) 1994-10-26

Family

ID=27265056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9325532A Expired - Fee Related GB2274165B (en) 1990-04-24 1993-12-14 Method and apparatus for examining a diamond

Country Status (1)

Country Link
GB (1) GB2274165B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2516297A (en) * 2013-07-18 2015-01-21 De Beers Centenary AG Measuring parameters of a cut gemstone
EP2840384B1 (en) * 2013-08-20 2020-06-17 SATT Gems AG Apparatus for the classification of colourless diamonds

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064136A (en) * 1959-01-27 1962-11-13 Textron Electronics Inc Automatic sorting system
EP0064842A1 (en) * 1981-05-12 1982-11-17 Sphere Investments Limited Material sorting
GB2151018A (en) * 1983-12-06 1985-07-10 Gunsons Sortex Ltd Sorting machine and method
EP0346045A2 (en) * 1988-06-09 1989-12-13 Gerald Ray Richert Product discrimination system and method therefor
WO1990007108A1 (en) * 1988-12-22 1990-06-28 Renishaw Plc Raman analysis apparatus
GB2236848A (en) * 1989-10-03 1991-04-17 Japanese Research & Dev Ass Fo Sorting apparatus utilizing transmitted light
EP0425426A2 (en) * 1989-10-27 1991-05-02 Wellborn Ltd. Method for identifying gemstones, particularly diamonds
WO1991011703A1 (en) * 1990-02-02 1991-08-08 Thomas De La Rue And Company Limited Detection apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064136A (en) * 1959-01-27 1962-11-13 Textron Electronics Inc Automatic sorting system
EP0064842A1 (en) * 1981-05-12 1982-11-17 Sphere Investments Limited Material sorting
GB2151018A (en) * 1983-12-06 1985-07-10 Gunsons Sortex Ltd Sorting machine and method
EP0346045A2 (en) * 1988-06-09 1989-12-13 Gerald Ray Richert Product discrimination system and method therefor
WO1990007108A1 (en) * 1988-12-22 1990-06-28 Renishaw Plc Raman analysis apparatus
GB2236848A (en) * 1989-10-03 1991-04-17 Japanese Research & Dev Ass Fo Sorting apparatus utilizing transmitted light
EP0425426A2 (en) * 1989-10-27 1991-05-02 Wellborn Ltd. Method for identifying gemstones, particularly diamonds
WO1991011703A1 (en) * 1990-02-02 1991-08-08 Thomas De La Rue And Company Limited Detection apparatus

Also Published As

Publication number Publication date
GB2274165A (en) 1994-07-13
GB9325532D0 (en) 1994-02-16

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Legal Events

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

Effective date: 20040424