Any idea where to find Xbox Jewels?

[parkerboi]

Well just modded my 360, almost done!!!! anyway i got tempted to take of the sticker on my dvd drive, and there was a random circle on it, so i decided ill remove it and replace it with a  jewel, iv seen these before but i cant find anywhere to buy them. only llamma but they suck. i was thinking maybe an original xbox jewel? if itd fit.
Any ideas?