Origami Out of Silver?
To make my silver jewelry, I use a product called Precious Metal Clay. PMC consists of pure silver with a compound mixed in which gives it clay-like properties. This enables the material to be molded and shaped in the same ways as any other clay. Kiln firing causes the compound to burn away, leaving .999 Fine Silver, which is the purest form of silver available.
Each of my silver pieces is of the highest quality possible. Fine silver contains no copper, and therefore tarnishes at a much slower rate than sterling silver (which is .075 copper). I use a combination of fine silver and sterling for my findings and chains, so care should still be used when storing pieces to prevent tarnish. I recommend storing the jewelry in a small Ziploc when not in use.