GB1316382A - Determination of the colour of diamonds - Google Patents

Determination of the colour of diamonds

Info

Publication number
GB1316382A
GB1316382A GB2341071*A GB2341071A GB1316382A GB 1316382 A GB1316382 A GB 1316382A GB 2341071 A GB2341071 A GB 2341071A GB 1316382 A GB1316382 A GB 1316382A
Authority
GB
United Kingdom
Prior art keywords
diamond
photo
conductor
channels
colour
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
Application number
GB2341071*A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 DE19702011931 external-priority patent/DE2011931C2/de
Application filed by Individual filed Critical Individual
Publication of GB1316382A publication Critical patent/GB1316382A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/389—Precious stones; Pearls
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • 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
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/501—Colorimeters using spectrally-selective light sources, e.g. LEDs

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Spectrometry And Color Measurement (AREA)
GB2341071*A 1970-03-13 1971-04-19 Determination of the colour of diamonds Expired GB1316382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702011931 DE2011931C2 (de) 1970-03-13 Vorrichtung zur Bestimmung der photometrischen Transmission geschliffener Diamanten

Publications (1)

Publication Number Publication Date
GB1316382A true GB1316382A (en) 1973-05-09

Family

ID=5764973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2341071*A Expired GB1316382A (en) 1970-03-13 1971-04-19 Determination of the colour of diamonds

Country Status (3)

Country Link
US (1) US3794424A (enExample)
JP (1) JPS5423270B1 (enExample)
GB (1) GB1316382A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2435158C1 (ru) * 2010-05-18 2011-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный университет" Способ исследования ограненных драгоценных камней

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT344419B (de) * 1973-03-20 1978-07-25 Dihaco Diamanten Handels Co Vorrichtung zur feststellung der bewertungsdaten von farbedelsteinen, insbesondere brillanten
US4266871A (en) * 1978-07-28 1981-05-12 Gem Instruments Corporation Apparatus for visually duplicating gemstones
US4291975A (en) * 1979-10-03 1981-09-29 Scientific Gem Identification, Inc. Apparatus for determining the color characteristics of a gem
US4259011A (en) * 1979-11-05 1981-03-31 Crumm John C Optical gem analyzer
DE3118249A1 (de) * 1981-05-08 1982-11-25 Jos. Schneider, Optische Werke, AG, 6550 Bad Kreuznach "beleuchtungseinrichtung fuer einen testprojektor"
CH651664A5 (fr) * 1982-10-14 1985-09-30 Nestle Sa Procede et appareil de mesure de la brillance d'une couleur.
US5835200A (en) * 1990-04-24 1998-11-10 Gersan Establishment Method and apparatus for examining an object
DE29517144U1 (de) * 1995-02-23 1996-01-11 Gassner, Christian, 63165 Mühlheim Edelstein-Absorbtionsspektralphotometer
US5835205A (en) * 1996-02-12 1998-11-10 C3, Inc. Optical testing system for distinguishing a silicon carbide gemstone from a diamond
US5966673A (en) * 1997-01-10 1999-10-12 Diamond Technologies, Inc. System and method for computerized evaluation 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
WO2007069242A1 (en) * 2005-12-12 2007-06-21 Platform Development & Investment Ltd. Assessment of diamond color
US9262284B2 (en) * 2006-12-07 2016-02-16 Lenovo Enterprise Solutions (Singapore) Pte. Ltd. Single channel memory mirror

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1744485A (en) * 1925-02-21 1930-01-21 Gustave L Herz Method and means for the examination of jewels
US2960909A (en) * 1957-01-07 1960-11-22 Jr Robert M Shipley Method for determination of color of gems
US3418053A (en) * 1964-08-28 1968-12-24 Technicon Instr Colorimeter flow cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2435158C1 (ru) * 2010-05-18 2011-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный университет" Способ исследования ограненных драгоценных камней

Also Published As

Publication number Publication date
DE2011931A1 (enExample) 1972-01-13
JPS5423270B1 (enExample) 1979-08-13
US3794424A (en) 1974-02-26
DE2011931B2 (de) 1972-01-13

Similar Documents

Publication Publication Date Title
GB1316382A (en) Determination of the colour of diamonds
US3885879A (en) Dual beam spectrophotometer utilizing a spectral wedge and bifurcated fiber optic bundle
US4054389A (en) Spectrophotometer with photodiode array
US2708389A (en) Spectral wedge interference filter combined with purifying filters
GB1474227A (en) Measuring apparatus
GB1465563A (en) Multiple path spectrophotometer method and apparatus
GB1403557A (en) Determination of the quality of jewellery stones
GB1305923A (enExample)
ES8404507A1 (es) Un espectrofotometro multicanal.
GB1187331A (en) Measuring the Temperature of a Selected Area of a Body
GB1338129A (en) Photometric analyzer
GB1382081A (en) Transmission spectra
GB1212946A (en) Polarimeter
GB1090217A (en) Optical system for measuring absorption of light
GB1392880A (en) Sample cell assembly and apparatus including same
JPS5760231A (en) Multi-wavelength spectrometer
GB1271172A (en) An arrangement for measuring the refractive index of liquids
GB679632A (en) Improvements in spectrophotometers
US2408023A (en) Spectrophotometric system
GB1019216A (en) Scattered light spectrophotometer
GB1246426A (en) A method of measuring a dimension of an object
US3381135A (en) Density measuring system having optical wedge to vary length of light path
GB1274297A (en) Method and apparatus for detecting defects in glass
GB1406296A (en) Method and apparatus for measuring optical irregularities in an article
GB1013171A (en) Method and apparatus for continuously indicating the amount of a substance in a basematerial

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee