Imho this is a fantastic opportunity for the BRF to acquire a decent sapphire tiara with the bonus of being an historic piece of jewellery. The so called sapphire tiara that Queen Elisabeth II owns is not an example of a very successful tiara. Queen Victoria Coronet is perfect for the Duchess of Cambridge or even for the Queen herself in ‘low profile’ situations. Besides, I think it would go marvelously with the George VI sapphire’s set and Prince Albert Brooch, not to mention Princess Diana’s engagement ring.
It is a large amount of money, sure, but with the public outcry for the tiara to stay in UK, I think that most people would accept easily the BRF to spend such amount of money. In a single move the tiara would stay in UK, satisfying the public in general, and would return to the main line of the BRF, getting into regular use again.