cpolk, you would find this concept interesting; the necklace, you see, becomes the inspiration for a work of art by the recipient artist. Much like the picture in a picture game. There's an explanation of how it works on the Lioness's homepage.
So I'm writing a science fiction story about will o'the wisps, around the structure of this beautiful, subtle necklace with the bits of flash and fire worked through it. I have about two paragraphs. I'm very excited about it.