Reactive Metals Studio, Inc. 
Specializes in niobium and titantium: lightweight, hypoallergenic metals that can be anodized as well as heat treated for a variety of color changes. Sheet, wire, and findings available.
http://www.reactivemetals.com/C.C. Silver & Gold, Inc.
Offers silver, sterling, gold, and gold-filled wire and sheet. Also offers a program to buy back scrap precious metals
http://www.ccsilver.com/
Eagle Tool Inc.
Jewelry manufacturer specializing in raw and precious metal stampings and findings. Custom and stock items available.
http://www.eagletool.com/
G&S Metals
Platinum, gold and sterling silver refining. Online ordering for casting grains, mill products, findings, platinum and gold solders and sizing stock.
http://www.gsgold.com/
Precious Metals West
Catering to small and medium size jewelers, offering a full line of refining services, cad-free solders, hand poured virgin alloys, casting grain, sheet, wire and sterling.
http://www.preciousmetalswest.com/
Bloomsteins Precious Metals
Offers a wide range of gold and silver products as well as tools and clamps. UK based.
http://www.bloomsteins.co.uk/
