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“Art Clay Silver: help needed”


Description from FaeryGoth Chick: I need help! A question to all of you… Can someone tell me if I can use gemstones in my art clay silver designs?! I want to make a pendant but I am not sure if for example my labradorite cab can withstand the heat of 750°C. Any advice? Thanks!


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Read the comments (or add your own)

  1. Sandra Martinez
    Sandra Martinez says:

    Some gemstones CANNOT take the heat! They crack….best to look it up on a PMC site on the net.

  2. FaeryGoth Chick
    FaeryGoth Chick says:

    Thanks for your response Sandra but I am not familiar with PMC… what does it mean? Do you have a web address as an example?

  3. No Photo
    Deb D Grammy Chick says:

    Is that PMC for polymer clay, Sandra?

  4. Smoky Rose
    Smoky Rose says:

    I only took one class, so am by no means versed in this subject – I only know that in that class, a girl w/more experience than me with clay, had wanted to use a gemstone – what she did was place the bezel into the clay – but not the stone until after the piece was cooked.

  5. FaeryGoth Chick
    FaeryGoth Chick says:

    I had a workshop last week, where I made a pendant and I brought my gem cabs with me but the instructor was reluctant to use them because she wasn’t familiar with working with gemstones. So I used a zircon instead and that is pretty too but I really want to use my gemstones. She said that indeed, the safest way to use them is to glue them into the piece afterwards but then, you always have the risk that it will fall out or something.

  6. Little Round Chick
    Little Round Chick says:

    PMC precious metal clay. Don’t know a thing about it just what the initials stand for.

  7. No Photo
    Deb D Grammy Chick says:

    Ahhhh, precious metal clay…thanks for clearing that up, LRC! I don’t know anything about it either, but the jewelry I’ve seen using it was gorgeous!

  8. No Photo
    Faithful Chick aka Faith says:

    I think maybe Linda Chick aka Diva Chick
    would be a good person to ask she works with polymer clay and has three sites she works with to sell. Boy I don’t feel qualified to make any comments but from the things I have watched on TV about crafts. I have not made anything yet from my beads even. Want to get a bead board yet dumb thing to wait til last for but don’t want Mr. Murphy cat spilling the beads! LOL

  9. No Photo
    Luv2bead - Little Chick says:

    I have no clue…Bubbly Chick might be a good Chick to ask!

  10. Little Round Chick
    Little Round Chick says:

    More Info: go to
    click on Metal Clay Connections at the bottom of the page. Issue #9: click on Bezel Setting Cabochons with PMC. I got this info from Yahoo search. Just typed in Precious Metal Clay and there were about a gazillion options. :)

  11. No Photo
    K H says:

    When I took a college art class I trid to cast a stone (don’t remember what is was, just that it came from the local rock hound shop). I carefully worked the stone into the wax, but between firing the plaster cast and pouring the the molten silver the pretty stone turned ugly. I have never used pmc, but I think I would make the setting and then set the stone after the firing process.

  12. Sandra Martinez
    Sandra Martinez says:

    Google “precious metal clay settings” maybe?

  13. No Photo
    Brenda H says:

    I read an article that listed the stones that could safely be used, but I don’t remember the name of the site. A search should tell you which ones are safe. Not much help, but I know it’s out there.

  14. No Photo
    K H says:

    Here’s a link:

    I noticed that laboradorite is on the list of stones that won’t or probably won’t survive the firing process. It looked that the harder stones (diamond, ruby, sappphire, garnate) were fireable, but quartz stones and others commonly used in hand-designed jewelry are not fireable. HTH :)

  15. Southern Chickie
    Southern Chick says:

    I just read on the PMC site that gemstones (especially those below 7 on the Mohs scale) are not used due to their inclusion levels which what make them crack under heat. I didn’t read the rest of the article, but it was entitled, “Using found rocks” Hope this helps some.

  16. Mommykat Bubbly Chick
    Mommykat Bubbly Chick says:

    Sorry I cant help; PMC is not something Ive played with yet. Sarah, I hope you figure this out.
    Btw, Pretty Pick!

  17. FaeryGoth Chick
    FaeryGoth Chick says:

    Thanks for all the advice ladies, I will check out the sites you gave me and I think I will also go to a jewelry store to get some advice there. I’ll keep you posted on this!

  18. No Photo
    RubberT aka Plucky Chick says:

    Please do, FaeryGoth! I want to learn vicariously thru you!!

  19. Anita QoG Funny Chick
    Anita QoG Funny Chick says:

    Sarah, If you can’t use labradorite in the firing, make the setting first, if you use an appoxy glue you should’nt have to worry! Appoxy is the only glue I use, I have’nt had much success with jewelry glue! Good Luck.

  20. FaeryGoth Chick
    FaeryGoth Chick says:

    thanks for all the advice and tips ladies, it is much appreciated :-)

  21. No Photo
    J Coleman says:

    I had a dream to make my own business, however I didn’t have got enough of cash to do that. Thank goodness my friend suggested to use the credit loans. Thence I took the small business loan and made real my desire.

  22. Daisy Chick - Dawn
    Daisy Chick - Dawn says:

    I may be able to help. I have taken a PMC precious Metal Clay class using sterling. I made a bezel and attached to the pendant. I used a cubic zirconium stone which will survive the intense heat. It turned out beautifully. my teacher said you can use gemstones, but you need to choose stones that can take the heat, meaning she felt around the 7.5 + on the Mohrs scale. That means you could in theory use a topaz, sapphire, ruby, diamond etc. I am not sure of the zircon’s hardness. you need stones that are fairly flawless and with no fractures. Most fine gemstone on the market are heat treated to bring out or enhance their color. This heat process is 2200 -2800 degrees faierheight if I remember correctly. Even the Blue diamonds you see are heat treated. Hopes this helps. I loved the PMC class I took. You can also use PMC in bronze.

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