Cubic Zirconia - Amethyst - Cabochon Oval - Checkerboard

Cubic Zirconia - Amethyst - Cabochon Oval - Checkerboard - 8mm x 10mm - pk/1 Rated AAA, our lab created cubic zirconias are beautiful as precious gemstones. Our high quality, calibrated CZs are precision cut and perfect for any setting, or to embed directly into metal clay.  Available in a variety of shapes, sizes and colors, get the sparkle and shine of precious gemstones with these beautiful, affordable stones. Stable at all metal clay temperatures. Hardness: Cubic zirconia has a rating of approximately 8.5 on Mohs hardness scale vs. a rating of 10 for diamond. Click here for our Gemstone Firing Guide, a comprehensive list of gemstones, firing times and temperatures each can withstand.