KenV
Member
Except these days the term is "marketing" -
Thanks Ed for that info.
It appears that Skip is right.It cannot be labled sterling silver if it is plated no matter how pure the plating is.
I understand that now.To be called sterling silver the whole thing must be made of silver not just a portion of it.
I take back my last statement Skip.They are indeed lying when labling a plating sterling silver.
I'm sorry for shooting my mouth off.
Just curious if I'm following correctly.
So the issue is the word 'sterling'? Calling it silver plated would be fine, but sterling silver plated is a misnomer, and sterling silver would imply solid? (except for those advertised as solid sterling, with a price to match).
If it doesn't tarnish, though, it can't be silver...it can be 'silver plate', as it's a plating that looks silver in colour (but possibly without silver)
Is that the crux of the matter?
That being said, as long as the term 'plated' is included, to show that the silver layer is shallow, would that be an issue? The citation that Ed gave was from an eBay guide, which is hardly definitive. Is there a concrete, legal, trade definition of Sterling which precludes it being referred to in reference to plating? Coudn't a .925 plating layer, however thin, be considered a 'sterling plate'?
Well, now that it's been hashed over a bit -- I think I read somewhere along the line in the foregoing posts that silver plate is not "sterling" -- it's silver plate. Silver plate is pure silver plated from a solution of potassium silver cyanide - KAg (CN<sub>2</sub>) electropated over a base metal with a plating thickness of around 1.5 - 5 microns (not very thick - maximum around 0.0002").That being said, as long as the term 'plated' is included, to show that the silver layer is shallow, would that be an issue? The citation that Ed gave was from an eBay guide, which is hardly definitive. Is there a concrete, legal, trade definition of Sterling which precludes it being referred to in reference to plating? Coudn't a .925 plating layer, however thin, be considered a 'sterling plate'?
The important part of the decision Ed was not the decision it was the courts interpretation of the law and the legislative intent behind the law and the courts citation of other cases - that would have been the same regardless of the case outcome. The intent of the legislation itself was to protect honest jewelers from unfair competition of dishonest jewelers. The wording of the law not-with-standing, courts interpret the law with the legislative intent in mind -- legislative intent can only be found by finding information that is available but not included in the law itself such as the congressional debate surrounding passage. I suppose we could find that if we knew how to search for it. But one of the common name for the law included the words Jewelers Protection....It was aimed at the jewelery industry. To get the law enforced one would have to either get a US Attorny interested, or bring a law suit (allowed under the law since 1970) themselves, in my opinion neither is likely to happen for pen kits...if a private suit is brought the plaintif would need to prove damages to collect anything to cover their cost of bringing suit and I doubt that anyone making pure pen kits is suffering any damages from plated pen kits the prices are far enough apart that they really don't compete.Migliori v. Calise, 750 F. Supp. 57 (D.R.I. 1990) :: Justia
The problem with that case is they did indeed receive what was listed, it was just not in bars like the buyer was assuming or wanting.
What is your point?If you are buying a necklace for your girl-friend or wife do you buy a chrome necklace or a sterling silver necklace. Which has the higher value to it?
Berea is showing that the major Vendors do watch us and will do the right thing given the opportunity and I'll bet they'll ask their resellers to do the same.
While that is good to correct something... how long have these been for sale? How could they let something so important go unaddressed?
More importantly i look forward to following the development of this.
That could be....and in their research into it they might well have discovered that their Silver plating exceeds the standard for Sterling and that by using the word Sterling they were implying that they were down grading their plating.Kudos to Berea Hardwoods for taking action in addressing this issue.It shows that they care what we think.
Preliminary results from the acid test shows there is no silver and not platinum present. Will move forward to the atomic absorption (AA) spectrophotometer testing.
How were the tests performed?Preliminary results from the acid test shows there is no silver and not platinum present. Will move forward to the atomic absorption (AA) spectrophotometer testing.
I'm still interested in how the acid tests were performed.Turns out the AA spectrometer is a no go. That requires the material to be in solution. However they can put it in the mass spectrometer. The lab is shut down for two weeks. Should give me enough time to possibly run other samples. Perhaps the fabled 22kt gold?
FYI, My supplier applies their silver plating 20 microns thick over zinc (the base part is copper or bronz) and it is then coated with a clear epoxy coating. This is typical for the industry. That is a very thin coating but silver plated jewelry is often even thinner. The zinc is used because it is less reactive than copper or bronze and increases resistance to tarnish.I'm still interested in how the acid tests were performed.Turns out the AA spectrometer is a no go. That requires the material to be in solution. However they can put it in the mass spectrometer. The lab is shut down for two weeks. Should give me enough time to possibly run other samples. Perhaps the fabled 22kt gold?
Just to give you an idea of how thin that is there are 25,400 microns to an inch. You are looking at about 8/10000th of an inch.FYI, My supplier applies their silver plating 20 microns thick over zinc (the base part is copper or bronz) and it is then coated with a clear epoxy coating. This is typical for the industry. That is a very thin coating but silver plated jewelry is often even thinner. The zinc is used because it is less reactive than copper or bronze and increases resistance to tarnish.I'm still interested in how the acid tests were performed.Turns out the AA spectrometer is a no go. That requires the material to be in solution. However they can put it in the mass spectrometer. The lab is shut down for two weeks. Should give me enough time to possibly run other samples. Perhaps the fabled 22kt gold?
I also read elsewhere that epoxy clear coats will show a reaction to the acid used for testing silver.
My supplier did tell me that some of their customers refer to items that are chrome plated as silver or gray metal. They did not mention if any of those customers were US Based.
Or I could also havd said .0008 in. A micron is 1/1000000 of a meter....I actually thought, until I looked it up that micron was an Amercan rather than a metric unit.That plating thickness of 20 microns might be easier to conceptualize by describing it to be just slightly less than 1/1000 inch thick, or alternatively: just slightly less than 0.001 inch.
I understand what you were doing Seve. I wasn't sure about how heavy that coating is for Silver, I knew it would be heavy for Rhodium and the Titaniums because making them much heavier can cause problems with brittleness. Still compared with the weight of metal in the whole item it is a very small percentage. I think almost all kit manufacturers do use a clear coat of epoxy.I was just putting the dimension into something many of us work with regularly. If a pen turner is working toward a "nice fit and finish", then he (or she) will be using the DC's and working in the +/- .001 or .002 inches of a target finish dimension, which is right at the thickness spec for the silver plate. Btw, 20 microns is a fairly heavy coating of silver (even acknowledging that the metal is soft and susceptible to brassing, unless there is a good clear coat applied for protection).
I didn't ask specifically for silver but have been told previously that the clear coating used is usually an epoxy. There are several different possibilities for the acid formulation. Without knowing what kit Ed used it's impossible to say. Most of the kit acids will react with epoxy but some will react only on the surface and not penetrate to the metal.Ed, are you saying that you don't have a setup for acid digestion at your house? :biggrin:
I'm not exactly sure what the clear coat would be made of, but I would think an organic solvent (acetone, toluene, dimethylene chloride, etc.) would strip it off. Certain mineral acids will react differently with the metals in question. Nitric will dissolve some metals, but not others. Hydrochloride may dissolve some that nitric won't, but wave some that nitric will in tact. Same thing with sulfuric. Thus, the playing material *should* be able to be solubilized without carrying the base metal.
GC will still require a solution, but will likely not handle the acidic solution required to dissolve the metals. If you can find someone that can run XRD or SEM, that may be your best bet.