As mention in my post below, I am probably in the minority here, but I am a fan of the Andamooka Opal Necklace.

Maybe HM could not maybe wear it today in her 90's but she rocked back in the day when she did wear it!

I love the diamond filigree work and some great thought was put into the making of this piece (as evidences by Beth's article).

What else could you have done with such a large stone? Too big for a brooch. Shape not suitable or a tiara.

I think that HM, like many of her generation (and those before) may take the superstitious view that opals are bad luck and, as such, we see very little of these gems in royal circles.

Maybe some of the younger generation of royals will have a chance to wear it. I for one would love to see it again!!