If you work with metal clay or are creating custom jewelry that incorporates gemstones, you’ve probably asked: Can this gemstone be fired in place? Our Gemstone Firing Guide is the definitive reference for artists, metalsmiths, and jewelers who want to know which natural, synthetic, and lab-created gemstones can withstand kiln or torch firing.
Why Use a Gemstone Firing Guide?
When designing metal clay jewelry or working with high heat, it's crucial to understand which gemstones can safely be fired and which cannot. Firing the wrong stone can lead to cracking, discoloration, or complete failure of your piece. This guide takes the guesswork out of gemstone selection and helps you work confidently with:
- Natural gemstones like garnet, sapphire, peridot, and quartz
- Cubic zirconia (CZ) simulants in various colors
- Lab-created gemstones such as synthetic ruby and emerald
- Nano gems in sterling silver and base metal clays
Our guide includes recommended firing temperatures, hold times, and compatibility with:
- Open shelf firing
- Carbon firing
- Torch firing
What You'll Learn
- Which gemstones are safe for kiln firing at high temperatures
- Which ones require carbon firing to prevent oxidation
- Which torch fireable options exist for low-tech setups
- The gemstones that should never be fired and must be set post-firing
