Cubic zirconias are a man-made gemstone and one of the very few that are safe to fire at the high temps required to sinter copper and bronze metal clay. These 4mm round cubic zirconia stones can be embedded in any type of metal clay, including PMC and ArtClay Silver, and then kiln fired.
Price of 2.00 is for 4 stones. Ships free with clay purchase!
I only have a few red/orange left, so they are available as part of the surprise me! option.