So we are about a week from the UK state visit to France, followed shortly by the SV to Germany.
Thinking of what jewellery Camilla might choose to wear, I am a little conflicted, especially as it probably needs to match (or at least not clash) with the Garter sash. This assumes that she does not get a French or a German order and sash.
If it is the Garter sash that she wears, choices could involve wearing:
> Diamonds: The Greville Boucheron tiara, or the Queen Alexandra Kokoshnik (we live in hope!), paired with the Queen Mother collet necklace used previously by Camilla, or if we really get lucky, the 3 string collet necklace used by QE2. Another potential necklace may be the Greville Festoon necdklace, in three string form only.
> Pearls: The GD Vladimir tiara. Not quite sure what necklace she might use, as the Queen Alexamdra wedding demi-parure necklace has already been used by Catherine once for the Dutch state banquet. Perhaps the Queen Victoria jubilee neckace?
>Sapphires: The Belgian necklace tiara and the George VI sapphire and diamond demi-parure.
If she is willing to wear jewellery contrasting with the Garter sash, we may get to see some of the following:
>Rubies: The Oriental Circlet and the Crown Rubies demi-parure.
> Emeralds: GD Vladimir tiara with emerald drops, and the Greville emerald and diamond necklace previously used by QEQM. Might also be a good setting to wear the Godman necklace.