I've never purchased jewelry before, and I had this nice gold chain from someone's grandmother that I really liked, but it broke. So I'm wondering where one purchases such a thing? I would really like a white gold or rose gold one.

It's just thinner than 1mm, and I believe it's a cable chain. about 19". I have looked online but it seems like something I might prefer to see before I buy.

Also, I can't afford the highest quality, but I also don't want to buy junk. So somewhere in the middle is where I'm aiming.