The cost of the equipment to make your custom jewelry will far exceed a one-time use; there is also the experience, metal knowledge, and the fact that the equipment can range on professional equipment from $$2,500 to $7,000, not including the 3D CAD software needed is about $7,500. Unless you are planning on becoming a custom jeweler, the cost of making jewelry is not going to be worth it to make just one item. It requires dedication and love for the trade.