I'm sorry I really don't know anything about it. I bought it on Listia for my niece an she didn't want it because she doesn't like hello kitty anymore.
Look on the clasp you will see very small writing. get a magnifying glass babe people will ask all the time and you will need to know or you will lose bidders!!! eeeewww you don't want to do that!!! lol it is easy to do.. usually the pendant has a mark also. .925 is sterling silver 10k 14k 18k all those are gold they come in yellow or white.
If you just read some of the stuff in some of these around all the auctions. you'll get the hang of it. You just want to make sure that you know the simple questions so your bidders will believe you! good luck emeraldtigger Listia Legends