Jewelry Manufacturing Samples for Line to be produced

I am a jewelry designer looking for a manufacturer to bring my designs to life. I work primarily with sterling silver, gold-filled, and gold vermeil incorporating semi-precious and precious gemstones. The types of designs I've created range from simple bezel set gemstones to micropave settings and intricate metalwork. I'm looking for a high quality manufacturer to produce my first line (20-25 pieces). The sample phase will be contracted first where you will take concept designs from sketches and produce one physical sample. I've attached concept designs that represent the type of work to be done. The real designs will need to be made in sterling silver with gold overly or 14k gold-filled. This bid is to produce 5 samples of my unique designs from start (sketch) to finished piece. The samples need to be completed in 3 weeks. The full production run will need to be completed in 4 weeks after the samples are approved and if we decide to work together to produce the entire line.