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| Re: [Orchid] Alloying cadmium in silver pros and cons | ||
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From: Umesh Chauhan Date: Thu May 29 20:12:58 2008 |
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========[ Invite a Friend - http://www.ganoksin.com/invite.htm ]======== My dear friend, As far as I know, no one in the world is using Cadmium except India, to alloy it with Silver. The standard in the world is Sterling Silver which contains 92.5 percent Silver and rest Copper or some other alloying metals with copper to increase the tarnish resistance of Sterling Silver, and so on. Cadmium is some times used in Sterling Silver to prevent cracking, but the percentage is very small less than 0.5 percent. I have read in one of very old book on precious alloy 15 years back. I do not remember the name of the book., sorry. Since these kind of alloy of silver with cadmium is only used in India, I doubt that you will find a satisfactory answer here on Orchid forum where Cadmium is a foreign word to them since it is also not used to prepare silver solders. Cadmium is totally banned in all the American and European countries since long, I hope I am not mistaken to state this. The problem of Cadmium is the fumes which is harmful to the person melting it and manufacturing it. The manufactured and finished jewellery or utensils with cadmium is not harmful to the user of finished goods, since there is no fumes involved which the user is going to inhale or the cadmium is not going to come out of the silver after it is alloyed. As far as I know Cadmium is used in India since more then 50 years or may be even more. You should have come to know this thing, that it is used in India nowadays. So the conclusion is that the fumes of cadmium should not be inhaled by the manufacturer since it causes cancer of lung, and so it is banned by all the wise person around the world. You should also educate the Indian Public (manufactures) to stop using Cadmium and help the artisans not to breadth the fumes of cadmium and live a healthy life by not breathing poison. Wish you all the success in your research on effects of Cadmium mixed in Silver Jewellery and Utensils, on the health. May all beings be Free from ill will, hatred, anger and animosity. May all beings develop Goodwill and Love, Peace and harmony. May all beings be Happy and Liberated. Umesh ____________________________________________________________________ T h e O r c h i d L i s t Open Electronic Forum for Jewelry Manufacturing Methods and Procedures ____________________________________________________________________ Orchid FAQ: ~ http://www.ganoksin.com/orchid/faq.htm Orchid Archives: ~ http://www.ganoksin.com/orchid/archive Orchid Galleries: ~ http://www.ganoksin.com/orchid/gallery.htm Invite a Friend: ~ http://www.ganoksin.com/invite.htm ____________________________________________________________________ Tips From The Jeweler's Bench - Article Archive ~ http://www.ganoksin.com/borisat/tip_sear.htm The Jeweler's Selected Bibliography List ~ http://www.ganoksin.com/jewelry-books Buy Orchid Jewelry: ~ http://www.ganoksin.com/shop ____________________________________________________________________ -Unsubscribe: -Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank ____________________________________________________________________ |
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