I like the glittery background it's shot on. Other than that, I'll leave the jewellery maker to speak for themselves
"Handmade cababochon using a map of the london underground. This map has been protected using a plastic clear cab. Cababochon is set in a silver plated mount. I have added a silver plated chain necklace with bolt clasp opening."
If anyone has the slightest idea what cababochon is (without looking it up on Google), I'd love to know.