Posted at 2018-06-14 03:32:08 — Link
How do I optain a Ruby Ring?
Posted at 2018-06-14 18:32:20 — Link
You'll need a design for it, usually found on islands, then you'll be able to craft it.
You could also find someone who already has the design and buy a ring from them, or ask them to make one for you with your materials.