A complete guide with 8 easy steps on how to sell self-made jewelry online. Everything, from building online store to market with multi-channel marketplaces. If you like to grow an online business, you might have thought about how to sell jewelry online. This ecommerce market is a fast-growing, multi-billion dollar industry, and it can be intimidating. It doesn’t matter if you’re a master metalsmith or a vintage Victorian locket hunter. You can build your own store and sell your self-made jewelry online.