1) these are clear glass cabochons, with a designed mix photo image on paper adhered to the back. The image is well adhered and not prone to deterioration under normal use
2) there are a total of 12 designs, usually they come in pairs. include 9 or 10 designs, sometimes 12 designs depending on the size you choose
3) a good craft glue or adhesives should be used to set these into or onto the findings. There work best in a finding that is enclosed at the back to eliminate the showing of the white paper.
4) if you need other size, please consult us and get our approval before placing the order