GB2096793B - Visually examining a gem stone - Google Patents

Visually examining a gem stone

Info

Publication number
GB2096793B
GB2096793B GB8210180A GB8210180A GB2096793B GB 2096793 B GB2096793 B GB 2096793B GB 8210180 A GB8210180 A GB 8210180A GB 8210180 A GB8210180 A GB 8210180A GB 2096793 B GB2096793 B GB 2096793B
Authority
GB
United Kingdom
Prior art keywords
gem stone
visually examining
examining
visually
gem
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
GB8210180A
Other versions
GB2096793A (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.)
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
Application filed by Gersan Ets filed Critical Gersan Ets
Priority to GB8210180A priority Critical patent/GB2096793B/en
Publication of GB2096793A publication Critical patent/GB2096793A/en
Application granted granted Critical
Publication of GB2096793B publication Critical patent/GB2096793B/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
    • 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
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
GB8210180A 1981-04-06 1982-04-06 Visually examining a gem stone Expired GB2096793B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8210180A GB2096793B (en) 1981-04-06 1982-04-06 Visually examining a gem stone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8110751 1981-04-06
GB8210180A GB2096793B (en) 1981-04-06 1982-04-06 Visually examining a gem stone

Publications (2)

Publication Number Publication Date
GB2096793A GB2096793A (en) 1982-10-20
GB2096793B true GB2096793B (en) 1985-02-20

Family

ID=26279055

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8210180A Expired GB2096793B (en) 1981-04-06 1982-04-06 Visually examining a gem stone

Country Status (1)

Country Link
GB (1) GB2096793B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206699A (en) 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8826224D0 (en) * 1988-11-09 1988-12-14 Gersan Anstalt Sensing shape of object
FR2807830B1 (en) * 2000-04-14 2002-08-16 Architecture Traitement D Imag OPTOELECTRONIC THREE-DIMENSIONAL SHAPE ACQUISITION DEVICE
EP1211503B2 (en) † 2000-12-04 2015-12-02 Diamcad A method and apparatus for locating inclusions in a diamond stone
GB0919235D0 (en) 2009-11-03 2009-12-16 De Beers Centenary AG Inclusion detection in polished gemstones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206699A (en) 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones

Also Published As

Publication number Publication date
GB2096793A (en) 1982-10-20

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Legal Events

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

Effective date: 19960406