ZA869442B - Method for assessing diamond quality - Google Patents

Method for assessing diamond quality

Info

Publication number
ZA869442B
ZA869442B ZA869442A ZA869442A ZA869442B ZA 869442 B ZA869442 B ZA 869442B ZA 869442 A ZA869442 A ZA 869442A ZA 869442 A ZA869442 A ZA 869442A ZA 869442 B ZA869442 B ZA 869442B
Authority
ZA
South Africa
Prior art keywords
diamond quality
assessing
assessing diamond
quality
diamond
Prior art date
Application number
ZA869442A
Other languages
English (en)
Inventor
Heather Jane Bowley
Donald Leslie Gerrard
Original Assignee
British Petroleum Co Plc
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 British Petroleum Co Plc filed Critical British Petroleum Co Plc
Publication of ZA869442B publication Critical patent/ZA869442B/xx

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
    • G01N21/62—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

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, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
ZA869442A 1985-12-19 1986-12-15 Method for assessing diamond quality ZA869442B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858531330A GB8531330D0 (en) 1985-12-19 1985-12-19 Differentiation process

Publications (1)

Publication Number Publication Date
ZA869442B true ZA869442B (en) 1988-07-27

Family

ID=10590022

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA869442A ZA869442B (en) 1985-12-19 1986-12-15 Method for assessing diamond quality

Country Status (13)

Country Link
US (1) US4875771A (ja)
EP (1) EP0250527A1 (ja)
JP (1) JPS63502052A (ja)
KR (1) KR880700932A (ja)
AU (1) AU591226B2 (ja)
BR (1) BR8607050A (ja)
CA (1) CA1276482C (ja)
DK (1) DK429987D0 (ja)
GB (1) GB8531330D0 (ja)
IN (1) IN168887B (ja)
SU (1) SU1658829A3 (ja)
WO (1) WO1987003963A1 (ja)
ZA (1) ZA869442B (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4851376A (en) * 1986-03-08 1989-07-25 Ngk Insulators, Ltd. Cordierite ceramic body having low thermal expansion coefficient, process for producing the same, and method of evaluating cordierite composition
GB8706422D0 (en) * 1987-03-18 1987-04-23 British Petroleum Co Plc Identification method
US5206699A (en) * 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones
US5835200A (en) * 1990-04-24 1998-11-10 Gersan Establishment Method and apparatus for examining an object
GB9103552D0 (en) * 1991-02-20 1991-04-10 Gersan Ets Classifying or sorting
GB9418050D0 (en) * 1994-09-07 1994-10-26 Gersan Ets Examining a diamond
US5932119A (en) 1996-01-05 1999-08-03 Lazare Kaplan International, Inc. Laser marking system
US5717209A (en) * 1996-04-29 1998-02-10 Petrometrix Ltd. System for remote transmission of spectral information through communication optical fibers for real-time on-line hydrocarbons process analysis by near infra red spectroscopy
US5966673A (en) 1997-01-10 1999-10-12 Diamond Technologies, Inc. System and method for computerized evaluation of gemstones
US6020954A (en) * 1997-12-18 2000-02-01 Imagestatistics, Inc. Method and associated apparatus for the standardized grading of gemstones
US6980283B1 (en) 1997-12-18 2005-12-27 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
US7260544B1 (en) * 2000-10-12 2007-08-21 Gemological Institute Of America, Inc. System and methods for evaluating the appearance of a gemstone
ATE553366T1 (de) * 2002-02-07 2012-04-15 Rgb Technologies Ab Analyseverfahren
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
US7158240B2 (en) * 2004-06-16 2007-01-02 The United States Of America As Represented By The Secretary Of The Army Measurement device and method
US9262284B2 (en) * 2006-12-07 2016-02-16 Lenovo Enterprise Solutions (Singapore) Pte. Ltd. Single channel memory mirror
JP5222898B2 (ja) 2010-05-17 2013-06-26 株式会社日立エルジーデータストレージ 記録方法、再生方法、記録装置、および再生装置
JP5798244B2 (ja) * 2011-06-13 2015-10-21 プレジデント アンド フェローズ オブ ハーバード カレッジ 固体状態のスピン系における効率的な蛍光検出
CN106198488B (zh) * 2016-07-27 2017-10-13 华中科技大学 一种基于拉曼光谱分析的煤质快速检测方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799604A (en) * 1926-11-03 1931-04-07 Fayette F Read Method and apparatus for identifying crystals
US3414354A (en) * 1964-10-28 1968-12-03 Perkin Elmer Corp Raman spectrometers
ZA71900B (en) * 1971-02-12 1972-08-30 De Beers Cons Mines Ltd Separation of particles by electromagnetic radiation
GB1416568A (en) * 1972-10-20 1975-12-03 Wilson S S Method of and apparatus for evaluating registering and identifying gemstones
DE7418353U (de) * 1974-05-27 1974-10-17 Eickhorst M Vorrichtung zur spektroskopischen untersuchung von edelsteinen
GB2010474A (en) * 1977-10-19 1979-06-27 Horchler S Gem colour meter
DE2935812A1 (de) * 1979-09-05 1981-03-12 Fa. Carl Zeiss, 7920 Heidenheim Verfahren zur werkstoffpruefung
US4259011A (en) * 1979-11-05 1981-03-31 Crumm John C Optical gem analyzer
ZA813263B (en) * 1980-06-04 1982-06-30 De Beers Cons Mines Ltd The assessment of colour in diamonds and other gems
FR2496888A1 (fr) * 1980-12-22 1982-06-25 Gemological Lab Antwerp Ensemble de metrologie gemmologique pour la gradation automatique d'une gemme, en particulier le diamant et autres pierres precieuses
JPS57158544A (en) * 1981-03-25 1982-09-30 Ii R C:Kk Identifying method of jewel and ornament by measurement of quantity system and optical system, and its data processor
US4394580A (en) * 1981-07-27 1983-07-19 L.C.E. Ltd. Method and apparatus for analyzing gems
GB2140555B (en) * 1983-05-24 1987-03-25 British Petroleum Co Plc Diamond separation
US4620284A (en) * 1983-12-29 1986-10-28 Uop Inc. Qualitative and quantitative analysis using Raman scattering

Also Published As

Publication number Publication date
EP0250527A1 (en) 1988-01-07
AU591226B2 (en) 1989-11-30
JPS63502052A (ja) 1988-08-11
GB8531330D0 (en) 1986-01-29
US4875771A (en) 1989-10-24
IN168887B (ja) 1991-07-06
AU6778987A (en) 1987-07-15
KR880700932A (ko) 1988-04-13
WO1987003963A1 (en) 1987-07-02
DK429987A (da) 1987-08-18
DK429987D0 (da) 1987-08-18
CA1276482C (en) 1990-11-20
BR8607050A (pt) 1988-02-23
SU1658829A3 (ru) 1991-06-23

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