Brass jewelry production

Looking for small-mid sized company who works with brass, sterling silver and gemstones to produce some jewelry collections for me. Must be able to work with me on low MOQ and must be self sufficient as I will not be able to assist with stone sourcing or buying materials. I would be looking for long term cooperation as my label needs alot of new production this year. Can be based anywhere but must be familiar with contemporary western design that may be intricate and detailed. Must have all quality assurance, production management in place to work with me My collection is 24 pieces Looking asap thank you