good evening sister. you're one lucky gal! the
solasfera is indeed one kind of a special diamond because of its carat, clarity, cut and color, especially the cut. due to intricacies of such a cut, it is better done with a certain minimum-sized diamond, thus the higher carat. clarity and color play a role too in determining the (out-of-body) price as it's rare to get all 4 c's perfect to the observer or ring bearer. if he can afford it, go for it, although you're being very considerate and thinking of the longer term of living a great married life till old age, caring for him, raising a family, managing household finances. such a bright beloved bling would most likely sit in a jewelery chest most of your married life and occasionally be shown or worn at special events or high society functions. it'll cause others to go "wow" and "omg" not only at you but also your hubby. a cheaper "copy" or fake imitation may be necessary for day-to-day wear as the chances of losing it is high if you intend to don it daily as a symbol of a lovely and well-heeled marriage.
that said, the one stone that truly wows me is not any diamond which is considered the ultimate gem for an engagement but the truly organic, down-to-earth, one-with-nature, fossilized, extremely colorful ammolite. after you get your solasfera ring, get your perfect multi-colored ammolite the size of an enlarged aureole (oops that's too huge, i mean areola :p) for a pendant. that will set you back several thousand shares of apple stock, but it will be the talk at the captain's dining table on a luxury cruise.

:p