Except it should be a spinner ring, which means there should be two parts (outer and inner), and you should be able to use your finger to 'spin' the outer DNA helix. Kinda like this: http://www.stimtastic.co/stim-jewelry/infinity-spinner-ring except the DNA helixes should extrude.
I am offering 1 BTC for modelling + printing + shipping
2x US size 5, silver
PM me if interested, please show portfolio of work