Hi Frank,
I think it's Hedychridium chloropygum. In Spain they are more reddish on thorax and violet on the abdomen than in France or Italy. 
Hedychridium subroseum is without extensive red colour on thorax or violet on T3.
Cheers
		ignored: hedychridium
 Chrysis emarginatula is really a nice species..
 Chrysis emarginatula is really a nice species..

 ) and I have not the description of H. roseum nanum.
  ) and I have not the description of H. roseum nanum.