1. This ring with fingerprint engraving:
2. These rings that leave tiny imprints:
Couples that buy these say that if you keep it on for a really long time, the little heart becomes virtually permanent on your skin. Find them here for $325.
3. This moving gears ring:
The gears move when the outer rims are spun. There's also a matching heart shaped necklace to go with it. Find it here for $165.
4. This ring to record your love:

This company engraves the sound waves for whatever you want to say to your partner around the ring. You could say "I do" or "I will love you forever" or "I like your hairy butt" because seriously, there's no real way for them to know what you said. Find it here for $385.
5. These mountain range rings:
The peak and valleys are designed to interlock. Find them here for $90.84.
6. This ring with a hidden message:
Find them here for $495-$6125 (depending on the metal and stone).
7. This teeny heart ring:
A tiny reminder that the other half of your heart has the other ring. Find them here for $325.
8. This moon phase ring:
You can get it customized with the moon phase of a special date. Find it here for $56.82.
11. These screw rings:
Because the bond you share is tougher than nails (screws?). Find them here for $189.
12. These Star Wars rings:
For the COCKIEST scavenger in the entire galaxy. Find them here for $940.
14. This illuminated ring:
15. These rings that answers the question of who loves who more:
(The answer is you love each other equally, now stop.) Find them here for $40.
17. This projection ring:
This ring was made as a project by the insanely talented Luke Jerram, and when light is passed through the ring, it projects a series of tiny portraits. Unfortunately it's not available for sale but you can read about it and the other amazing rings Luke has created here.