I just got engaged!! Yay! Finally! And I'm pretty sure my ring is the most beautiful I've ever seen.

Now, to insure it. I'm planning on getting renter's insurance now too, so I assume I'll just get a ring rider with my renter's insurance. The thing is, my ring is actually worth more than all the rest of my belongings combined, so the price and coverage of that ring rider is pretty important as I choose a company. Anybody out there that's researched this and can tell me where to start? I'm looking for the least expensive premium I can get, preferably with coverage for accidental loss and not just theft.
Thanks ladies!