I've never purchased preloved designer jewelry, but my tennis bracelet and wedding band were both estate purchases, and we saved a boatload.
How do you ensure the pieces are authentic (sorry if it's a silly question - but I have never bought second hand anything before)..
Good post and I agree with you.Know what you are buying. I love pre loved jewellery as it is not always possible to find or afford the equivalent from stores, especially if it were a popular item that is frequently copied.
If I want something specific from a major jeweller like Tiffany I'll usually buy retail for the buying experience and reassurance.
Online I'd be very wary unless the source was extremely reputable with very robust return policies.
There are some online resellers that are very highly thought of here with excellent reviews.
Good luck on your search!