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  • Cubic Zirconia - Columbian Emerald - Cushion - Checkerboard

    $6.00 - $9.00

    $6.00
    Cubic Zirconia - Columbian Emerald - Cushion - Checkerboard
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Diamond 9mm X 13mm

    $4.00

    $4.00
    Cubic Zirconia - Columbian Emerald - Diamond 9mm X 13mm Pkg/1
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Marquise
    Sale

    $9.00 - $16.00

    $15.00
    $9.00
    Cubic Zirconia - Columbian Emerald - Marquise
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Oval - Checkerboard
    Sale

    $12.00 - $19.00

    $16.00
    $12.00
    Cubic Zirconia - Columbian Emerald - Oval - Checkerboard
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Pear
    Sale

    $5.00 - $12.00

    $15.00
    $5.00
    Cubic Zirconia - Columbian Emerald - Pear
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Round

    $5.00 - $8.00

    $5.00
    Cubic Zirconia - Columbian Emerald - Round
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Rounded Barrel 11mm x 15mm

    $6.50

    $6.50
    Cubic Zirconia - Columbian Emerald - Rounded Barrel 11mm x 15mm Pkg/1
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Square

    $4.00 - $5.00

    $4.00
    Cubic Zirconia - Columbian Emerald - Square
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Triangle 6mm

    $7.00

    $7.00
    Cubic Zirconia - Columbian Emerald - Triangle 6mm Pkg/2
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Columbian Emerald - Trillion

    $6.00 - $6.50

    $6.00
    Cubic Zirconia - Columbian Emerald - Trillion
    Cubic Zirconia - Columbian Emerald 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...
  • Cubic Zirconia - Dark Amethyst - Barrel - Checkerboard

    $6.00

    $6.00
    Cubic Zirconia - Dark Amethyst - Barrel - Checkerboard
    Cubic Zirconia - Dark Amethyst 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 ...
  • Cubic Zirconia - Dark Tanzanite - Cushion

    $5.50 - $10.00

    $5.50
    Cubic Zirconia - Dark Tanzanite - Cushion
    Cubic Zirconia - Dark Tanzanite 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...
  • Cubic Zirconia - Fire Opal - Barrel

    $5.00 - $7.00

    $5.00
    Cubic Zirconia - Fire Opal - Barrel
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Barrel - Checkerboard
    Sale

    $4.00 - $7.00

    $6.00
    $4.00
    Cubic Zirconia - Fire Opal - Barrel - Checkerboard
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Cushion

    $5.00 - $6.00

    $5.00
    Cubic Zirconia - Fire Opal - Cushion
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Cushion - Checkerboard

    $5.00 - $6.00

    $5.00
    Cubic Zirconia - Fire Opal - Cushion - Checkerboard
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Marquise

    $5.00 - $7.00

    $5.00
    Cubic Zirconia - Fire Opal - Marquise
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Oval - Checkerboard
    Sale

    $3.20 - $7.90

    $4.00
    $3.20
    Cubic Zirconia - Fire Opal - Oval - Checkerboard
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Pear

    $4.00 - $6.00

    $4.00
    Cubic Zirconia - Fire Opal - Pear
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Round
    Sale

    $4.00 - $7.00

    $5.50
    $4.00
    Cubic Zirconia - Fire Opal - Round
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Square
    Sale

    $2.20 - $5.50

    $3.00
    $2.20
    Cubic Zirconia - Fire Opal - Square
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Triangle

    $4.00 - $6.00

    $4.00
    Cubic Zirconia - Fire Opal - Triangle
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Fire Opal - Trillion

    $4.00 - $6.50

    $4.00
    Cubic Zirconia - Fire Opal - Trillion
    Cubic Zirconia - Fire Opal 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 embe...
  • Cubic Zirconia - Green Apple - Barrel
    Sale

    $4.00 - $8.00

    $5.00
    $4.00
    Cubic Zirconia - Green Apple - Barrel
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Barrel - Checkerboard
    Sale

    $3.20 - $7.20

    $4.00
    $3.20
    Cubic Zirconia - Green Apple - Barrel - Checkerboard
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Cabochon Round - Checkerboard
    Sale

    $5.00 - $10.00

    $7.00
    $5.00
    Cubic Zirconia - Green Apple - Cabochon Round - Checkerboard
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Cushion
    Sale

    $5.00 - $5.60

    $7.00
    $5.00
    Cubic Zirconia - Green Apple - Cushion
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Cushion - Checkerboard
    Sale

    $4.00 - $6.40

    $5.00
    $4.00
    Cubic Zirconia - Green Apple - Cushion - Checkerboard
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Diamond 9mm x 13mm
    Sale

    $3.00

    $4.00
    $3.00
    Cubic Zirconia - Green Apple - Diamond 9mm x 13mm Pkg/1
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Marquise

    $5.60 - $6.40

    $5.60
    Cubic Zirconia - Green Apple - Marquise
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Oval - Checkerboard
    Sale

    $3.20 - $9.60

    $4.00
    $3.20
    Cubic Zirconia - Green Apple - Oval - Checkerboard
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Pear
    Sale

    $4.00 - $12.00

    $5.00
    $4.00
    Cubic Zirconia - Green Apple - Pear
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Round
    Sale

    $4.00 - $14.00

    $5.00
    $4.00
    Cubic Zirconia - Green Apple - Round
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Square
    Sale

    $4.00 - $12.00

    $6.00
    $4.00
    Cubic Zirconia - Green Apple - Square
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Triangle
    Sale

    $4.00 - $6.40

    $5.00
    $4.00
    Cubic Zirconia - Green Apple - Triangle
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Green Apple - Trillion
    Sale

    $4.40 - $12.00

    $5.00
    $4.40
    Cubic Zirconia - Green Apple - Trillion
    Cubic Zirconia - Green Apple 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 em...
  • Cubic Zirconia - Hessonite Garnet - Barrel

    $4.00 - $8.00

    $4.00
    Cubic Zirconia - Hessonite Garnet - Barrel
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Barrel - Checkerboard 13mm x 18mm

    $8.00

    $8.00
    Cubic Zirconia - Hessonite Garnet - Barrel - Checkerboard 13mm x 18mm - Pkg/1
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Cabochon Round - Checkerboard

    $4.00 - $7.00

    $4.00
    Cubic Zirconia - Hessonite Garnet - Cabochon Round - Checkerboard
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Cushion - Checkerboard 12mm

    $5.50

    $5.50
    Cubic Zirconia - Hessonite Garnet - Cushion - Checkerboard 12mm - Pkg/1
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Marquise

    $4.00 - $8.00

    $4.00
    Cubic Zirconia - Hessonite Garnet - Marquise
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Oval - Checkerboard

    $4.00 - $8.00

    $4.00
    Cubic Zirconia - Hessonite Garnet - Oval - Checkerboard
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Pear

    $3.50 - $9.00

    $3.50
    Cubic Zirconia - Hessonite Garnet - Pear
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Round
    Sale

    $4.00 - $6.00

    $7.00
    $4.00
    Cubic Zirconia - Hessonite Garnet - Round
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Square
    Sale

    $3.00 - $7.00

    $5.50
    $3.00
    Cubic Zirconia - Hessonite Garnet - Square
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Triangle

    $3.00 - $4.50

    $3.00
    Cubic Zirconia - Hessonite Garnet - Triangle
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Hessonite Garnet - Trillion

    $4.00 - $7.00

    $4.00
    Cubic Zirconia - Hessonite Garnet - Trillion
    Cubic Zirconia - Hessonite Garnet 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 ...
  • Cubic Zirconia - Ice Flower Cut - Fancy Green - Asscher

    $11.70 - $15.60

    $11.70
    Cubic Zirconia - Ice Flower Cut - Fancy Green - Asscher
    Cubic Zirconia - Ice Flower Cut - Fancy Green The ice flower cut CZ sparkles like no other stone with a center that looks like shattered glass or ice. The small facets on the pavilion of these ston...
  • Cubic Zirconia - Ice Flower Cut - Fancy Green - Round

    $11.70 - $19.20

    $11.70
    Cubic Zirconia - Ice Flower Cut - Fancy Green - Round
    Cubic Zirconia - Ice Flower Cut - Fancy Green The ice flower cut CZ sparkles like no other stone with a center that looks like shattered glass or ice. The small facets on the pavilion of these ston...
  • Cubic Zirconia - Ice Flower Cut - Fancy Pink - Asscher

    $8.10 - $10.80

    $8.10
    Cubic Zirconia - Ice Flower Cut - Fancy Pink - Asscher
    Cubic Zirconia - Ice Flower Cut - Fancy Pink The ice flower cut CZ sparkles like no other stone with a center that looks like shattered glass or ice. The small facets on the pavilion of these stone...

Showing 51 -100 of 204 items

Cubic Zirconia

Many of our Cubic Zirconia Gemstones are kiln-safe, making them an excellent choice to add beautiful color and bling to your jewelry creations. Whether you are working in metal clay or using traditional fabrication or casting methods, we’ve got the stones you want at prices you can afford. Find a rainbow of sparkling Cubic Zirconia like Amethyst, Emerald, Garnet, Pink Sapphire, White Diamond, Fire Opal and others. We offer the widest selection of custom-cut CZ gemstones from small to large sizes 1.75mm to 16mm.

For firing temperatures and times on a variety of gemstones, refer to our Gemstone Firing Guide:

Click here to download a PDF version of our Gemstone Firing Guide.

Why buy cubic zirconia?

Using cubic zirconia in your jewelry artistry has many advantages.... among the highest is the relatively low cost for an increased value applied to your jewelry art.
Cubic zirconia is a relatively hard man-made gem, rating around 8 on the Mohs scale. A Diamond has a rating of 10 (the hardest) and graphite with a rating of 1-2. How does this relate to you, the jewelry artist? With a relatively high level of hardness, cubic zirconia gemstones are extremely suitable and appropriate for jewelry that may take some everyday abuse, such as rings or bracelets. >
To the naked eye, Cubic Zirconia will be flawless every time. Should your jewelry art ever need a replacement stone, cubic zirconia, a very cost effective alternative to diamonds or sapphires, will retain the look and feel of the previous stone. No need to redesign your jewelry's attitude to fit the stone. Let the stone fit the jewelry.
Cubic zirconia has a relatively high refraction quality. This will vary from color to color. The refraction rate for zirconia is 2.15 – 2.18, in comparison, a diamond has a refraction rate of 2.417. What does this tell you? Each and every CZ you purchase from Cool Tools has a strong ‘fire’ or sparkle adding beauty to your jewelry.
We have a wide selection of pre-made ring settings and bezel templates to make your own settings in metal clay.