I can help you with the exact need as I have previously worked, But prior to this, I need to understand what exactly are you looking for.
Is it the market scenario, current players, contact info of key companies.
I have a big list of all players along with profiles on each apart from the overall the global market condition.
Contact me to know more..
I've worked with several product designers and craftsmen working in the jewelry space. Can you offer more details about your specific application (materials, form factor, scale, etc.) Feel free to message me or jump on a call anytime.