GB1547371A - Diamond identification - Google Patents

Diamond identification

Info

Publication number
GB1547371A
GB1547371A GB328/75A GB32875A GB1547371A GB 1547371 A GB1547371 A GB 1547371A GB 328/75 A GB328/75 A GB 328/75A GB 32875 A GB32875 A GB 32875A GB 1547371 A GB1547371 A GB 1547371A
Authority
GB
United Kingdom
Prior art keywords
diamond
ray
topographic
photographs
diffraction spectrum
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
GB328/75A
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.)
De Beers Consolidated Mines Ltd
Original Assignee
De Beers Consolidated Mines Ltd
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 De Beers Consolidated Mines Ltd filed Critical De Beers Consolidated Mines Ltd
Priority to GB328/75A priority Critical patent/GB1547371A/en
Priority to ZA757905A priority patent/ZA757905B/en
Priority to FR7539909A priority patent/FR2296846A1/en
Priority to JP50159676A priority patent/JPS527290A/en
Priority to DE19752559245 priority patent/DE2559245A1/en
Priority to CH1692875A priority patent/CH609152A5/en
Priority to BE163285A priority patent/BE837281A/en
Priority to IL48777A priority patent/IL48777A/en
Priority to NLAANVRAGE7600004,A priority patent/NL181382C/en
Priority to US05/811,764 priority patent/US4125770A/en
Publication of GB1547371A publication Critical patent/GB1547371A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
    • B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/205—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials using diffraction cameras
    • 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
    • G01N33/38—Concrete; ceramics; glass; bricks
    • G01N33/381—Concrete; ceramics; glass; bricks precious stones; pearls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/0605—Composition of the material to be processed
    • B01J2203/062—Diamond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/065—Composition of the material produced
    • B01J2203/0655—Diamond

Abstract

The method is based on the insight that each diamond has unique internal irregularities and faults which affect the X-ray diffraction spectrum of the diamond in a characteristic manner. In order to identify a diamond, a topographic X-ray photograph is made thereof and compared with topographic X-ray photographs of known diamonds. Identification is preferably carried out by using photographs which reproduce the X-ray diffraction spectrum at the Bragg angle.
GB328/75A 1975-01-03 1975-01-03 Diamond identification Expired GB1547371A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB328/75A GB1547371A (en) 1975-01-03 1975-01-03 Diamond identification
ZA757905A ZA757905B (en) 1975-01-03 1975-12-18 Diamond identification
FR7539909A FR2296846A1 (en) 1975-01-03 1975-12-22 PROCESS FOR IDENTIFYING DIAMONDS, AND IDENTIFICATION REGISTER USED
JP50159676A JPS527290A (en) 1975-01-03 1975-12-27 Identification of diamond
DE19752559245 DE2559245A1 (en) 1975-01-03 1975-12-30 METHOD OF IDENTIFICATION OF DIAMONDS
CH1692875A CH609152A5 (en) 1975-01-03 1975-12-31 Method for identifying diamonds
BE163285A BE837281A (en) 1975-01-03 1976-01-02 IDENTIFICATION OF DIAMONDS, ESPECIALLY OF PRECIOUS STONE QUALITY DIAMONDS
IL48777A IL48777A (en) 1975-01-03 1976-01-02 Method for diamond identification
NLAANVRAGE7600004,A NL181382C (en) 1975-01-03 1976-01-02 METHOD FOR IDENTIFYING A DIAMOND
US05/811,764 US4125770A (en) 1975-01-03 1977-06-30 Diamond identification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB328/75A GB1547371A (en) 1975-01-03 1975-01-03 Diamond identification

Publications (1)

Publication Number Publication Date
GB1547371A true GB1547371A (en) 1979-06-13

Family

ID=9702459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB328/75A Expired GB1547371A (en) 1975-01-03 1975-01-03 Diamond identification

Country Status (9)

Country Link
JP (1) JPS527290A (en)
BE (1) BE837281A (en)
CH (1) CH609152A5 (en)
DE (1) DE2559245A1 (en)
FR (1) FR2296846A1 (en)
GB (1) GB1547371A (en)
IL (1) IL48777A (en)
NL (1) NL181382C (en)
ZA (1) ZA757905B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179230A (en) * 1985-08-06 1987-02-25 Amoco Corp X-ray analysis of rock samples
US4900147A (en) * 1987-03-18 1990-02-13 The British Petroleum Company, P.L.C. Diamond mapping
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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438083Y2 (en) * 1987-04-22 1992-09-07
JP2517057B2 (en) * 1988-04-13 1996-07-24 東京エレクトロン株式会社 X-ray inspection method and X-ray inspection device
DE19631367C1 (en) * 1996-08-02 1997-11-13 Roland Dr Diehl X-ray identification method for cut diamonds
JP6686278B2 (en) 2014-02-28 2020-04-22 株式会社リコー Inspection device, inspection kit, transfer medium, inspection device manufacturing method, and inspection method

Family Cites Families (1)

* 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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179230A (en) * 1985-08-06 1987-02-25 Amoco Corp X-ray analysis of rock samples
US4710946A (en) * 1985-08-06 1987-12-01 Amoco Corporation Method and apparatus for X-ray video fluoroscopic analysis of rock samples
GB2179230B (en) * 1985-08-06 1989-09-06 Amoco Corp Non-destructive analysis of rock samples
US4900147A (en) * 1987-03-18 1990-02-13 The British Petroleum Company, P.L.C. Diamond mapping
US6020954A (en) * 1997-12-18 2000-02-01 Imagestatistics, Inc. Method and associated apparatus for the standardized grading of gemstones
US6239867B1 (en) 1997-12-18 2001-05-29 Imagestatistics, Inc. Apparatus and method for grading, testing, and identifying gemstones
US6980283B1 (en) 1997-12-18 2005-12-27 Imagestatistics, Inc. Method and associated apparatus for the standardized grading of gemstones

Also Published As

Publication number Publication date
JPS527290A (en) 1977-01-20
JPS6123501B2 (en) 1986-06-06
FR2296846A1 (en) 1976-07-30
NL181382B (en) 1987-03-02
ZA757905B (en) 1977-07-27
IL48777A (en) 1979-10-31
IL48777A0 (en) 1976-03-31
NL181382C (en) 1987-08-03
BE837281A (en) 1976-07-02
DE2559245A1 (en) 1976-11-11
FR2296846B1 (en) 1981-07-31
CH609152A5 (en) 1979-02-15
NL7600004A (en) 1976-07-06
DE2559245C2 (en) 1988-05-26

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Legal Events

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

Effective date: 19950102