The only one I can think of that was written about was the dark orange of the Fiesta ware, an old pattern...it contained lead but that was years ago....
I would use a paper plate over the top of it if I was worried about it...try googling it...
this link shows 5.9 on the lead content.....http://exposinglead.com/uploadfolder...tesresults.pdf
The red fiesta was radioactive, some say, but did have excess lead in it. That was the only color that did.
Red glazed pottery from Mexico has lead in it also, I understand. Seems you can "treat" the pieces to remove the lead, but it removes the color as well. Pity, the reds are good looking pieces.
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My understanding of it was that the dishware is safe if made from porcelain. If it's a pottery/clay body then it's subject to same lead content as the earth it came from. Also much of the earth's crust is radioactive due to natural deposits of thorium.
How much lead can possibly leach into your food for the few minutes it sits on the plate? A cooking vessel, yes, I would be quite concerned, but dinnerware seems like it would be low risk even if it contains lead.
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Do you have young children? If not, then I would have no fears of using them. Lead poisoning is an issue for very young children whose brains are still developing, but most older people don't have to worry about it.
Lead in glazes is used because it's cheap and allows pieces to be fired at low temperatures (pottery). China, Mexico, AND ITALY continue to use lead. Hand-decorated china is more likely to contain lead. (Say no to all that studio "I love Grandma" ware)
Don't use for food or drink:
All pottery items
Any item thats original glaze has crackled or has cracks.
It's the release of lead, a leaching process, in ALL Dinnerware that can be mitigated. Don't store food in them, don't microwave food in them, don't use serving bowls for high-acid foods or liquid foods. I would use your dinnerware, but wisely. (I don't think it will stand up well in the dishwasher though)
And about the Fiesta type ware, lead wasn't the concern back in those days, it was the uranium that had folks freaking out. That's been debunked, the pieces themselves never had measurable radioactivity.
I really, really, really doubt that they have a lead content.
But after googling the name you gave, I would suggest putting them up on Ebay.
Depending on what pattern, they are going for between $6 and $40 each plate.
Thanks, Chickenista, that IS interesting! I couldn't understand the listings in "clear" with a 0 in the first column though, does that mean they weren't tested? (Homer Laughlin, the maker of our OP's dishes)
I've been poking around about heavy metals in general, and it looks like the opalescent glassware isn't very safe eiither. Goodbye, Mirrabelle Fire King coffee mug...
Thought glass was glass, never considered the opalescent stuff was any different. Of course, it's my favorite, I've collected up vintage sets of glasses too. So I'm going to give it a rest from use and try to find out more about it. I know you can damage the finish with abrasives, that should have been a clue.
Thanks for that interesting link chickenista. Yippee for Corelle and Corningware! However, I am not tossing out my collection of vintage dinnerware...especially my Homer Laughlin! We rarely use it...sometimes at Christmas and, from the looks of it, it probably has less lead than my Wal Mart Christmas dishes!
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I have a bunch of the blue Currier & Ives dishes that I use at holidays. I did research when I bought them and learned that even if the glaze had lead in it, it won't leach into your food unless the finish has been compromised. So as long as there is no crazing (looks like a crackle finish) on the dishes, you should be fine to use them. Don't eat off of anything with crazing.