Good description:
He could see the simple ring adorning her finger next to a plain wedding band for decades to come. That one graceful piece of jewelry said…“Lois.”
I like that sentence a lot.
Its band was strong and durable, able to withstand years of wear. The multifaceted stone glistened from the artificial lights above; the facets were as complex as the woman who would wear the ring. He wondered, might it shimmer even better in moonlight on her finger?
What a great question! I immediately flashed to an image of Lois in moonlight with the ring on her finger.
Are you going to get into the proposal? This fic could certainly be expanded.
Readability suggestion: I find it easier to read if you double-space between paragraphs, and start a new paragraph when each person's dialogue starts.