Hi, my partner and I have broken up & would like to sell the engagement ring that we purchased. How would we best go about this? It cost between $5-$10K and has hardly been worn (we were only engaged briefly). Would we go back to the jeweller that we purchased it from? eBay doesn''t seem to cater for jewellery this expensive. Can anyone please help with some advice? The diamonds are not certified but came from a very reputable jeweler in Australia. thanks!!