First of all, congratulations, I hope she says yes. There's some things you should know, though, when out shopping for the ring, if you're into that kind of thing. The ring thing.
Here's some terms specific to diamond shopping you should be able to talk with your jeweller.
Brilliance is the value of a diamond’s seeming inner light. This brilliance is what diamonds are prized for, and it’s caused by light entering the diamond through one of the facets, refracting within the diamond, and exiting through another facet.
