I suppose QVC led the way in buying jewellery unseen - and with the 30 day mbg - so potential buyers became more confident about using Amazon and eBay for better prices.
Don't ask me what I think of you, I might not give the answer that you want me to.
I've got a jewellery box full of diamonique, which includes my first ever purchase from QVC. I haven't bought any jewellery for years though, since Him Ooop North regaled me with necklaces, pandora bracelets and charms, ear rings and the white gold and diamond ring he bought me.
Maybe, if I knew how to sell stuff on eBay, I could empty out my jewellery box as I'm unlikely to wear any of those items again.