Right now I have:

Sunflower Golem Scheme

Mantle Scheme

Telescope (already assembled)

I'm looking for a Ruby Ring Scheme, and will trade any one of the above for it - I've been poking around the islands all week and I nabbed a Pendant scheme, but no Ruby Ring. I'm willing to throw in ten Vermillion if anyone's interested. Thanks!

I don't have a scheme to sell, but I can make you a ring.  

Just replace my 50 rubys and the 500 coin that I would use to make it. 

I've got Ruby Ring Scheme, are you interested?

I'm also looking for this Scheme