Yes it can, if the silver has nickel in it which most silver will have some in it. You are best to use 14 Karat or higher gold (not white gold) or titanium. Theses metals have no nickel and should cure the problem.
Remember even high grade surgical steel has nickel.
Yes, pollutants present in the air react with silver and cause it to tarnish.
I hope so....cause I did :/
Some people can simply be allergic to the silver. People with piercings that didn't know that they were allergic to silver would have irritation and the occasional swelling.
Sterling is 92.5% silver. The other 7.5% is usually copper, but can include other metals. Copper is added to silver to reduce the material cost, and to increase the hardness. Sterling is by no means the "highest" quality of silver. It is slightly harder than .999 "pure" silver, but it also corrodes much more easily because of the copper content. The black oxidation on sterling silver is a result of copper catalyzing the reaction with air. Salt will also cause sterling to corrode more quickly, but will not affect .999 silver the same way. Salt is found in sweat, seawater, at the table, etc., and all of those sources can cause sterling silver items to turn black. Sterling silver is often coated in a fine layer of .999 silver to hold off corrosion and for the brighter reflectivity of pure silver.
No. What causes skin to turn green is when the metal is copper or mixed with copper.
It means the manufacturer did not specify the alloy. Most Sterling is 92.5% silver, hence the 925 designation. Most unmarked sterling is of a lower composition with the remainder being copper and sometimes tin. Lower compositions can cause allergic reactions in people sensitive to other metals. The piece should be considerably cheaper than a similar made of graded silver.
It will not cause permanent harm to the ring; however, it may leave a residue that you need to wipe off. I used hand sanitizer and my sterling silver ring turned black/gray in some areas. You can either use a silver cloth or hot soapy water and a tissue to get it off.
== == Tarnish is in no way indicative of a low quality in sterling silver. Sterling silver (or .925 silver) is, by law, at least 92.5% pure silver and no more than 7.5% other metals. Sterling silver is an alloy, or mixture, of metals. Pure silver is too soft to be used for most jewelry and household good purposes, so other metals are added to strengthen the metal and make it more durable. Pure silver oxydizes (tarnishes) very slowly, but the addition of other metals to pure silver cause it to oxydize (or tarnish) more quickly. Laws regulate how metals must be marked. In the US, only pure silver can be marked ".999" and only silver of at least 92.5% purity can be marked ".925" or "sterling."
no
Infections like warts and herpes can cause bumps where the urine comes out (that is, around the urethral opening).
Treatment will depend on the cause of the bumps. A vet will best be able to determine the cause and proper course of treatment.
Foods that you are allergic to can cause bumps to appear on your tongue.