GB2295227B - Method and apparatus for classifying diamonds - Google Patents
Method and apparatus for classifying diamondsInfo
- Publication number
- GB2295227B GB2295227B GB9601274A GB9601274A GB2295227B GB 2295227 B GB2295227 B GB 2295227B GB 9601274 A GB9601274 A GB 9601274A GB 9601274 A GB9601274 A GB 9601274A GB 2295227 B GB2295227 B GB 2295227B
- Authority
- GB
- United Kingdom
- Prior art keywords
- diamonds
- classifying
- classifying diamonds
- 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
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
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 Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9601274A GB2295227B (en) | 1992-05-19 | 1993-05-19 | Method and apparatus for classifying diamonds |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929210674A GB9210674D0 (en) | 1992-05-19 | 1992-05-19 | Method and apparatus for examining an object |
GB9601274A GB2295227B (en) | 1992-05-19 | 1993-05-19 | Method and apparatus for classifying diamonds |
GB9310337A GB2267147B (en) | 1992-05-19 | 1993-05-19 | Method and apparatus for examining an object |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9601274D0 GB9601274D0 (en) | 1996-03-27 |
GB2295227A GB2295227A (en) | 1996-05-22 |
GB2295227B true GB2295227B (en) | 1996-07-17 |
Family
ID=26300902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9601274A Expired - Fee Related GB2295227B (en) | 1992-05-19 | 1993-05-19 | Method and apparatus for classifying diamonds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2295227B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1016537A3 (en) | 2004-11-10 | 2007-01-09 | Wetenschappelijk En Tech Onder | METHOD FOR DISTINCTING COLORLESS AND ALMOST COLORLESS DIAMONDS AND ARRANGEMENT FOR CARRYING OUT THIS METHOD. |
GB2516297A (en) * | 2013-07-18 | 2015-01-21 | De Beers Centenary AG | Measuring parameters of a cut gemstone |
EP3729063B1 (en) | 2017-12-21 | 2022-02-09 | Università Degli Studi Di Milano - Bicocca | System and method for spectroscopy analysis of diamonds |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291975A (en) * | 1979-10-03 | 1981-09-29 | Scientific Gem Identification, Inc. | Apparatus for determining the color characteristics of a gem |
GB2244329A (en) * | 1990-04-24 | 1991-11-27 | Gersan Ets | Identifying gemstone type. |
-
1993
- 1993-05-19 GB GB9601274A patent/GB2295227B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291975A (en) * | 1979-10-03 | 1981-09-29 | Scientific Gem Identification, Inc. | Apparatus for determining the color characteristics of a gem |
GB2244329A (en) * | 1990-04-24 | 1991-11-27 | Gersan Ets | Identifying gemstone type. |
Also Published As
Publication number | Publication date |
---|---|
GB9601274D0 (en) | 1996-03-27 |
GB2295227A (en) | 1996-05-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20040519 |