"I got mine from a lovely little shop in Glastonbury nearly 15 years ago and still looks brand new! (It's been worn every day since, and still going strong!) ;-)
Not much help if you aren't from England, I grant you, but useful if you come…"
"Personally, I bought mine from G.I. Jewelry. It's about 12 dollars (not counting shipping). Nothing fancy about it, no frills or extra decorations.
So yeah, it's slightly larger than a quarter if that gives you a good reference.The vast…"