A 10.33-carat Burmese ruby sold for an impressive $5.5 million after a six-minute bidding war among two bidders on the phone and one in the New York saleroom at Sotheby’s Magnificent Jewels auction.

Industry experts have identified top online platforms for selling vintage jewelry, with recommendations tailored to different styles, price points, and audiences. Platforms like Etsy, eBay, Ruby Lane, ...

Many dismiss costume jewelry as cheap, but the right pieces can bring big profits. Learn how thrift finds and estate sale ...