ZA813690B - Examining a gemstone - Google Patents

Examining a gemstone

Info

Publication number
ZA813690B
ZA813690B ZA00813690A ZA813690A ZA813690B ZA 813690 B ZA813690 B ZA 813690B ZA 00813690 A ZA00813690 A ZA 00813690A ZA 813690 A ZA813690 A ZA 813690A ZA 813690 B ZA813690 B ZA 813690B
Authority
ZA
South Africa
Prior art keywords
gemstone
examining
Prior art date
Application number
ZA00813690A
Inventor
J Lawrence
A Stewart
J Dodson
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
Publication of ZA813690B publication Critical patent/ZA813690B/en

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/16—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs
    • B24B9/162—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs by bruting, i.e. rubbing two precious stones against each other
    • 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
ZA00813690A 1980-06-04 1981-06-03 Examining a gemstone ZA813690B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8018349 1980-06-04

Publications (1)

Publication Number Publication Date
ZA813690B true ZA813690B (en) 1982-07-28

Family

ID=10513836

Family Applications (2)

Application Number Title Priority Date Filing Date
ZA00813689A ZA813689B (en) 1980-06-04 1981-06-03 Centering and working gemstones
ZA00813690A ZA813690B (en) 1980-06-04 1981-06-03 Examining a gemstone

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ZA00813689A ZA813689B (en) 1980-06-04 1981-06-03 Centering and working gemstones

Country Status (3)

Country Link
JP (1) JPS5756736A (en)
BE (1) BE889097A (en)
ZA (2) ZA813689B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9151717B2 (en) * 2009-03-11 2015-10-06 Sarine Color Technologies Ltd. Methods and systems of imaging cut stones

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT344419B (en) * 1973-03-20 1978-07-25 Dihaco Diamanten Handels Co DEVICE FOR DETERMINING THE EVALUATION DATA OF COLORED GEMS, IN PARTICULAR DIAMONDS
JPS5090200U (en) * 1973-12-19 1975-07-30
JPS5160291U (en) * 1974-11-05 1976-05-12

Also Published As

Publication number Publication date
JPH0470583B2 (en) 1992-11-11
JPS5756736A (en) 1982-04-05
ZA813689B (en) 1982-07-28
BE889097A (en) 1981-10-01

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