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Don't you know there is such thing as 'Gold Allergy' or 'allergy to gold'?
http://en.wikipedia.org/wiki/Body_piercing_materials
When using gold for piercings, a lower purity than 14 or 18 carat (58 to 75%) is not recommended. Neither should gold plated jewelry be used and even though the EU allows it, gold should never be used in healing piercings.
Gold is about as soft as lead and is easily scratched. These scratches can irritate the body, especially in new piercings. Tonguebars in gold are not recommended as chewing on the beads is common. This makes the beads full of scratches and flaws. Zircontwo is recommended instead.
For piercing, a gold alloy is used, the most common being 18k, with 24k being entirely pure. 18k gold contains 75% gold and 25% copper and silver. Traces of other metals may also be present. In lower quality gold, zinc and nickel can also be found.
As said, gold jewelry should never be used in healing piercings as body fluids tends to discolor the metal and cause it to "bleed." Allergy to gold is uncommon but it does exist, and then mostly from white gold. In some extreme cases, the copper in the jewelry can "bleed" out and cause greenish discolorings to the tissue.
18k gold can become discolored from autoclaving.
http://www.ehow.com/about_5101800_gold-allergy-symptoms.html
Gold Allergy Symptoms
By Cyn Vela, eHow Contributor
Repeated or constant exposure to gold can cause an allergy to develop in some people. While some people are born with an allergy to gold, it is more common to have a gold allergy develop over time, such as from handling or wearing gold regularly. Gold allergy symptoms vary in intensity, as well as from person to person.
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4 ธ.ค. 53 18:41:29
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แพ้ทอง = morning sickness รึเปล่าครับ google translate
