Pink bears and green squirrels? What is this, Mars? Well, actually, yes. Resin "Dessin" rings by Japan's Mars.
Bonus link: so, which are you less likely to encounter in the wild (on planet Earth): a green squirrel or a mirrored squirrel? Cute squirrel ring in mirrored acrylic from the UK's Maggie Angus.
Even more jewellery: