I tested some jewelry from Stuart Moore recently - Corian rings with diamonds. I really like their modern designs, and their gallery is the Apple Store of jewelry. They're super nice and so I decided...octopus.
It turns out the octopus I shot for my portfolio was huge - the ones I was finding for this shoot were a quarter or an eighth the size of that one. My original plan was to build a kind of landscape with the octopus arms, and nestle the rings in it, but since I couldn't find a large enough octopus, I did this. I actually like this better, because the spirals formed by the arms are really nice.
The the array of gems on the white ring is what triggered the octopus idea.