“So the question is now, what is it going to be worth?
“It all boils down to the value of the sapphire. A seven and a half-carat Ceylon sapphire of this particular colour is going to be worth at least £4,000-£5,000,” John commented.
“Very nice! That’s great,” the owner exclaimed.
“Normally when we see these things, there is nothing at all. But this one brooch with this one specimen stone, with this one special stone, is truly remarkable,” the expert concluded.
Antiques Roadshow is available to watch on BBC iPlayer and every Sunday night at 8pm on BBC One.