Any experts out there?

[rob]

Think I have a good deal on an engagement ring. A London jeweller has offered me the below for £3,400. What do you guys reckon?
Platinum ring
Diamond:
Round brilliant
0.9
E
SI1
GIA Certified
Not sure of the dimensions

 

[pricescope]

Rob, welcome.

It is about $5,700 US. Internet prices for 0.9 E SI1 can vary from $3,500 (for fair cut stones) up to $5,000 for ideal cut stones.

You have to find out more about cut of your stone (proportions, finish, measurements) in order to make comparison.