Here’s my tip having a lot of experience in this field… go to your local small jewellery store, ask can you take some photos and split the profits or even just resell them at cost - to prove your model. Even buy some at retail and sell them at a loss if you can’t find a partner. Because the hardest part is not sourcing it’s selling. Jewellery online sales is hard with difficult ROIs. Buying wholesale means minimum order quantities, and if you can’t sell them it’s costly. Make 10 sales before you even explore the buying side.