Citric Acid! The safer, gentler, biodegradable alternative to other pickles. It can be used for pickling silver, brass, nickel, copper and gold. Use warm or hot water for best results in removing fire scale. After taking your piece out of the citric acid solution, you can rinse your piece out of the citric acid solution. Beaducation.com, model # SOL042, $9.70
Rustic Metal Charms - 9 Pairs - Oxidized, Rusty Charms - Hearts, Coins, Leaves, FIligree - Lightweight, Suitable for Earrings - 18 Pieces. // -18 pieces in 9 pair of oxidized vintage and new metal charms -All pieces have closed loops or places for easy attachments -For size reference, the largest charms are 1 inch in length -All charms are lightweight enough for use in earring assemblages -Oxidized; all pieces are sealed w/microcrystalline art wax to maintain patina.
Bulb Pin from Merchant & Mills: Merchant & Mills' Bulb Pins are perfectly simple and just as useful. Like safety pins but with a wide bowl at the bottom, use these pins to tidily hang tags at your flea market table or even as removable stitch markers for your knitting. Each pin is a little over 1 3/4 inches long.
Smart Stain is a strong, non-hazardous, fast drying, transparent patina system. It has no VOC and no odor. Smart Stain works on any metal or substrate as well as over patinas and other oxides. Smart Stain is made by combining finely ground, naturally occurring colored oxides with a water base polymer/resin binder. It is sold concentrated and may be diluted with distilled water up to 25% to increase transparency.