HOCHTEMPERATUR/HOCHDRUCK-FARBEVERÄNDERUNG VON DIAMANTEN
摘要
A method is provided for changing the colour of a brown type IIa diamond from brown to colourless. The method involves subjecting the diamond to selected conditions of elevated temperature and elevated pressure to produce the colour change.
申请公布号
AT341394(T)
申请公布日期
2006.10.15
申请号
AT20010917364T
申请日期
2001.04.02
申请人
ELEMENT SIX (PROPRIETARY) LIMITED
发明人
BURNS, ROBERT, CHARLES;FISHER, DAVID;SPITS, RAYMOND, ANTHONY