Thank you Henri M for this photo. Even not so large, one can identify the tiara. The image of Lady Elizabeth Anson (she's third from top left) on King Harald 70th Bday group photo is not no more visible but the shape of her tiara IMO indicates that it is HH "Diamond Loop tiara". Below we can we see Pcess Viggo wearing it and details of the tiara:
It is stated that HH ordered it for her own to court jeweller Dragsted on 1957.The story said before that she already had a "paste stones" one which is now probably with Countess Marina of Rosenborg. The real one went to Ann Pcess Georg of Denmark who left it to her daughter Elizabeth the current owner. Perhaps I misunderstood Glenn's terms, this was from one of his thread on earlier 2011. Countess Marina often wears it (below) like her later sister-in-law Charlotte did (see pic thread further down):
Many years before, HH 's niece Countess Alexandra of Rosenborg, only daughter of Prince Erik attended many royal events such as Astrid of Norway's wedding (1961) & CP Margrethe's one (1967) wearing what I believe the real tiara :
--Previous Message-- : This is the bride you mean: : : Fiona Elizabeth Fenella Shakerley : daughter of : Sir Geoffrey Adam Shakerley, 6th Baronet : and : Lady Elizabeth Georgiana Anson : : :