Plan to propose to my gf. Saw a diamond ring in Love&Co, 0.56c ideal cut (Love & Co signature or something, supposedly better than GIA certified diamonds). Full spec below.

0.56c
VS1
H
Round diamond
RM15k including white gold ring.

Is it worth it? Saw this to be the best so far, surveyed Tiffany, Cartier, TSL, DeBeers, Le Lumiere, Habib  become more confused because I don't see much difference no matter how they try to sell their special / signature diamond. So far Love & Co seems "best" from my very limited experience. But not sure 15k is worth it for the spec?

HCA calculator from pricescope is 1.4 for this particular diamond.

Thanks!