1. First you need to get the requirement by understanding the domain of the Jewelry.
2. Then you have design and start the development.
3. Once the development completed you have to do QA on that then you can release to the production.
So there are lot of steps to make the application. It is not very easy to get the source code in forums/posts. If you want to start development, Catch me I can guide/help you.
Direction is important than speed