GB660719A - Method of producing permanent modifications of the colour and other physical characteristics of gems - Google Patents

Method of producing permanent modifications of the colour and other physical characteristics of gems

Info

Publication number
GB660719A
GB660719A GB13986/49A GB1398649A GB660719A GB 660719 A GB660719 A GB 660719A GB 13986/49 A GB13986/49 A GB 13986/49A GB 1398649 A GB1398649 A GB 1398649A GB 660719 A GB660719 A GB 660719A
Authority
GB
United Kingdom
Prior art keywords
gem
transmutation
colour
physical characteristics
gems
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
GB13986/49A
Other languages
English (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.)
MAURICE ELIE NAHMIAS
Original Assignee
MAURICE ELIE NAHMIAS
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 MAURICE ELIE NAHMIAS filed Critical MAURICE ELIE NAHMIAS
Publication of GB660719A publication Critical patent/GB660719A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
    • G21G1/00—Arrangements for converting chemical elements by electromagnetic radiation, corpuscular radiation or particle bombardment, e.g. producing radioactive isotopes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
GB13986/49A 1948-05-31 1949-05-25 Method of producing permanent modifications of the colour and other physical characteristics of gems Expired GB660719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1009251T 1948-05-31

Publications (1)

Publication Number Publication Date
GB660719A true GB660719A (en) 1951-11-14

Family

ID=9568003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13986/49A Expired GB660719A (en) 1948-05-31 1949-05-25 Method of producing permanent modifications of the colour and other physical characteristics of gems

Country Status (4)

Country Link
BE (1) BE489221A (forum.php)
FR (1) FR1009251A (forum.php)
GB (1) GB660719A (forum.php)
NL (1) NL81096C (forum.php)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945793A (en) * 1952-09-22 1960-07-19 Dugdale Ronald Arthur Process for coloring diamonds
US2998365A (en) * 1954-04-19 1961-08-29 Ind Distributors 1946 Ltd Treatment of diamonds
US3012142A (en) * 1959-03-30 1961-12-05 Howard W Etzel High temperature dosimeter
US3075906A (en) * 1960-06-15 1963-01-29 Chow Ken-Tang Process for irradiating pearls and product resulting therefrom
US3293190A (en) * 1963-11-20 1966-12-20 Exxon Research Engineering Co Method for modifying the electrical and catalytic properties of a supported catalyst
EP0014528A1 (en) * 1979-01-17 1980-08-20 De Beers Industrial Diamond Division (Proprietary) Limited A method of reducing the colour of diamond

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996763A (en) * 1956-01-31 1961-08-22 Gen Electric Diamond material
US3181933A (en) * 1961-02-28 1965-05-04 Gen Electric Radioactive diamond and process for the preparation thereof
FR2460119A1 (fr) * 1979-06-29 1981-01-23 Inst Sinteza Mineralnogo Syr Procede de changement de coloration de pierres dures

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945793A (en) * 1952-09-22 1960-07-19 Dugdale Ronald Arthur Process for coloring diamonds
US2998365A (en) * 1954-04-19 1961-08-29 Ind Distributors 1946 Ltd Treatment of diamonds
US3012142A (en) * 1959-03-30 1961-12-05 Howard W Etzel High temperature dosimeter
US3075906A (en) * 1960-06-15 1963-01-29 Chow Ken-Tang Process for irradiating pearls and product resulting therefrom
US3293190A (en) * 1963-11-20 1966-12-20 Exxon Research Engineering Co Method for modifying the electrical and catalytic properties of a supported catalyst
EP0014528A1 (en) * 1979-01-17 1980-08-20 De Beers Industrial Diamond Division (Proprietary) Limited A method of reducing the colour of diamond
US4399364A (en) 1979-01-17 1983-08-16 Trevor Evans Diamond treatment

Also Published As

Publication number Publication date
NL81096C (forum.php)
BE489221A (forum.php)
FR1009251A (fr) 1952-05-27

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