High temperature/high pressure colour change of diamond

Details High temperature/high pressure colour change of diamond High temperature/high pressure colour change of diamond

B - Operations, Transporting

01

J

B01J 3/06 (2006.01) C01B 31/06 (2006.01) C30B 33/00 (2006.01)

Patent

CA 2405362

A method is provided for changing the colour of a brown type IIa diamond from brown to pink. The method involves subjecting the diamond to selected conditions of elevated temperature and elevated pressure to produce the colour change.

L'invention concerne un procédé destiné à changer la couleur d'un diamant brun de type IIa, soit du brun vers le rose. Ce procédé consiste à soumettre ce diamant à des conditions sélectionnées de température et de pression élevées de manière à provoquer un changement de couleur.

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