Title:
ダイアモンドの高温/高圧における変色
Document Type and Number:
Japanese Patent JP4796729
Kind Code:
B2
Abstract:
The invention provides a method of changing a grey type IIb diamond from grey to blue or enhancing the colour of a type IIb diamond. Selected conditions of high temperature and high pressure are used to produce the colour change.
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Inventors:
Burns, Robert, Charles
David, Fisher
Spitz, Raymond, Anthony
David, Fisher
Spitz, Raymond, Anthony
Application Number:
JP2001570361A
Publication Date:
October 19, 2011
Filing Date:
April 02, 2001
Export Citation:
Assignee:
Element Six Technologies (Proprietary) Limited
International Classes:
B01J3/06; C01B31/06
Domestic Patent References:
| JPH01183409A | 1989-07-21 | |||
| JPH06263418A | 1994-09-20 |
Attorney, Agent or Firm:
Tadahiko Ito