.39 TCW Late OEC engagement ring.

I bought this to match a loose diamond I have but it's been sitting in my box and I don't have the heart to dismantle it because it's beautiful and the inscription makes me think it should be loved as a whole.  It is not certed and this is the information I was given when I bought it .   18 Kt white gold ( hallmark) ring size 6.25 engaving says Nicolai to Margarit 5-6-33 total weight 1.7 dwt center diamond color -L Clarity si2 ( I have no louped it) dimensions 4.0 x 3.8 total weight .30 side diamonds 6 single cut color grade H-I clarity VS2-SI1 dimentions 1.5 average TCW .09