Here's my entry for the challenge. it's a real quick one but I had so much other scenes to work on, that I had little time. here's the story behind it: Somewhere deep under water an old civilization has left it's technology. After millions of years 'the ruins have been crystalized into luminant quadrintium (very rare mineral thet can only be made artificial). They left their magic energy-trefoil behind and it's the only thing that remains is perfectly preserved.

There's some jpeg artefact, I'll post a sharper version in the gallery later.

Great effect!

So that's where I left my ring puzzle.