Blue Sapphire question

[MatthewT]

The central stone on my Grandma's engagement ring that she has been wearing for 40 years fell out a couple of days ago. I'm guessing it was an oval ~ 6-7mm X 4-5 mm which I guess is around 1 carat. I live in london so I'm gonna try to find a stone in Hatton Garden. What sort of approximate price should I be looking to pay for about a 1carat cornflowerish vs or si oval sapphire?

 

[Avondale]

With these measurements you're looking at something closer to 1,5ct, I believe.

Price varies wildly on colour. Could be 1k, could be 2k+, and that's with the assumption of heating. Unheated would go even higher. Plus you're shopping at Hatton Garden which, if I understand correctly, isn't exactly known for bargain prices.