CH518544A - Vorrichtung zur Farbbestimmung geschliffener Diamanten - Google Patents

Vorrichtung zur Farbbestimmung geschliffener Diamanten

Info

Publication number
CH518544A
CH518544A CH411070A CH411070A CH518544A CH 518544 A CH518544 A CH 518544A CH 411070 A CH411070 A CH 411070A CH 411070 A CH411070 A CH 411070A CH 518544 A CH518544 A CH 518544A
Authority
CH
Switzerland
Prior art keywords
color
determining
cut diamonds
diamonds
cut
Prior art date
Application number
CH411070A
Other languages
English (en)
Inventor
Eickhorst Manfred
Original Assignee
Eickhorst Manfred
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 Eickhorst Manfred filed Critical Eickhorst Manfred
Publication of CH518544A publication Critical patent/CH518544A/de

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
    • 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

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
CH411070A 1968-03-30 1970-03-18 Vorrichtung zur Farbbestimmung geschliffener Diamanten CH518544A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1772105A DE1772105C2 (de) 1968-03-30 1968-03-30 Vorrichtung zur Bestimmung der photometrischen Transmission geschliffener Diamanten

Publications (1)

Publication Number Publication Date
CH518544A true CH518544A (de) 1972-01-31

Family

ID=5701112

Family Applications (1)

Application Number Title Priority Date Filing Date
CH411070A CH518544A (de) 1968-03-30 1970-03-18 Vorrichtung zur Farbbestimmung geschliffener Diamanten

Country Status (3)

Country Link
US (1) US3610756A (de)
CH (1) CH518544A (de)
DE (1) DE1772105C2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789234A (fr) * 1971-09-29 1973-01-15 Colorant Schmuckstein G M B H Procede et dispositif pour l'enregistrement des qualites de pierres de bijouterie
US3751162A (en) * 1972-03-13 1973-08-07 R Long Refractometer and reflectometer
DE7418353U (de) * 1974-05-27 1974-10-17 Eickhorst M Vorrichtung zur spektroskopischen untersuchung von edelsteinen
IL58344A (en) * 1978-10-09 1983-09-30 De Beers Cons Mines Ltd Method of assessing the colour of gems
US4375854A (en) * 1981-03-31 1983-03-08 Rca Corporation Stone sorting apparatus and method
US5835200A (en) * 1990-04-24 1998-11-10 Gersan Establishment Method and apparatus for examining an object
US5510891A (en) * 1995-01-23 1996-04-23 Frangie; Nehme Object characteristic direct measuring device utilizing a magnetically attracted lover base and an upper frame having a scaled lens therein
US5835205A (en) * 1996-02-12 1998-11-10 C3, Inc. Optical testing system for distinguishing a silicon carbide gemstone from a diamond
BE1014212A3 (nl) * 2001-06-05 2003-06-03 Wetenschappelijk En Tech Onder Werkwijze en inrichting voor het bepalen van de hoek tussen facetten van een transparant object.
EP1635990B1 (de) * 2003-05-30 2006-12-13 Arvindbhai Lavjibhai Patel Diamantreibemaschine
DE102004006620A1 (de) * 2004-02-10 2005-08-25 Framatome Anp Gmbh Lagertransportsystem und Verfahren zum Lagern und zum Transport von radioaktiven Abfällen
US7436498B2 (en) * 2005-06-08 2008-10-14 Sarin Technologies Ltd. Apparatus for determining the shape of a gemstone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US574588A (en) * 1897-01-05 Thomas thorp
US2157437A (en) * 1938-01-25 1939-05-09 Jr Robert M Shipley Dark field illuminator
US2533747A (en) * 1948-12-20 1950-12-12 Rolf A Thienemann Gem viewer
US2909961A (en) * 1957-08-23 1959-10-27 Sr Albert S Samuels Method of examining and classifying diamonds
AT262655B (de) * 1964-11-27 1968-06-25 Hermann Dipl Phys Flad Optisches Registrier- und Prüfgerät für geschliffene Edel- oder Schmucksteine

Also Published As

Publication number Publication date
US3610756A (en) 1971-10-05
DE1772105C2 (de) 1974-04-04
DE1772105B1 (de) 1972-05-31

Similar Documents

Publication Publication Date Title
AT328607B (de) Vorrichtung zur rheoplethysmographie
CH460064A (de) Vorrichtung zur Veränderung der Bluttemperatur
AT337404B (de) Vorrichtung zur schaumabgabe
CH535958A (de) Vorrichtung zur optisch-elektronischen Abstandsmessung
CH494595A (de) Vorrichtung zur Zerkleinerung von Fleisch
AT288294B (de) Vorrichtung zur Begasung von Flüssigkeiten
CH518544A (de) Vorrichtung zur Farbbestimmung geschliffener Diamanten
CH521630A (de) Vorrichtung zur selbsttätigen Auswahl von Werkzeugen
AT255691B (de) Vorrichtung zur wahlweisen Zurschaustellung von Teppichen
CH503277A (de) Vorrichtung zur Entnahme von Wasserproben
CH464574A (de) Vorrichtung zur kontinuierlichen Ausführung von Messungen
DE2000288B2 (de) Vorrichtung zur foerderung von stueckgut
CH431577A (de) Vorrichtung zur kontinuierlichen Eiserzeugung
AT280516B (de) Vorrichtung zur Zubereitung von Expreß-Kaffee
AT295028B (de) Vorrichtung zur Akupunktur
CH502593A (de) Vorrichtung zur Druckmessung
DE1965209B2 (de) Vorrichtung zur spektralen analyse von objekten
CH534379A (de) Vorrichtung zur Zeitanzeige
CH544927A (de) Vorrichtung zur Längenmessung
CH489335A (de) Vorrichtung zur Bearbeitung von Flächen
AT290824B (de) Mobile Vorrichtung zur Herstellung von Nuten
CH503235A (de) Vorrichtung zur Elektroklimatisierung
AT307088B (de) Vorrichtung zur kontinuierlichen Bandprüfung
AT303948B (de) Einrichtung zur gleichzeitigen Überwachung mehrerer Flammen
AT320318B (de) Vorrichtung zur kontinuierlichen Viskositätsmessung

Legal Events

Date Code Title Description
PL Patent ceased