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Cubic Zirconia - Alexandrite - Pear Cubic Zirconia - Alexandrite - Pear

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Cubic Zirconia - Alexandrite - Round Cubic Zirconia - Alexandrite - Round

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Cubic Zirconia - Amethyst - Barrel Cubic Zirconia - Amethyst - Barrel

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Cubic Zirconia - Amethyst - Cushion Cubic Zirconia - Amethyst - Cushion

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CZ: Amethyst - Diamond 9mm x 13mmCubic Zirconia - Amethyst - Diamond 9mm x 13mm Pkg - 1 Cubic Zirconia - Amethyst - Diamond 9mm x 13mm Pkg - 1

Synthesized Cubic Zirconia (or CZ) is hard, optically flawless and can be made in a variety of different colors.

Pkg of 1: $4.00
Cubic Zirconia - Amethyst - Marquise Cubic Zirconia - Amethyst - Marquise

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Cubic Zirconia - Amethyst - Pear Cubic Zirconia - Amethyst - Pear

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Cubic Zirconia - Amethyst - Round Cubic Zirconia - Amethyst - Round

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Cubic Zirconia - Amethyst - Square Cubic Zirconia - Amethyst - Square

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Cubic Zirconia - Amethyst - Triangle Cubic Zirconia - Amethyst - Triangle

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Cubic Zirconia - Amethyst - Trillion Cubic Zirconia - Amethyst - Trillion

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Cubic Zirconia - Blue Topaz - Barrel Cubic Zirconia - Blue Topaz - Barrel

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Cubic Zirconia - Blue Topaz - Barrel - Checkerboard 13mm x 18mm Cubic Zirconia - Blue Topaz - Barrel - Checkerboard 13mm x 8mm - Pkg - 1

Synthesized Cubic Zirconia (or CZ) is hard, optically flawless and can be made in a variety of different colors.

Pkg of 1: $7.00
Cubic Zirconia - Blue Topaz - Pear Cubic Zirconia - Blue Topaz - Pear

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Cubic Zirconia - Blue Topaz - Round Cubic Zirconia - Blue Topaz - Round

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Cubic Zirconia - Blue Topaz - Square Cubic Zirconia - Blue Topaz - Square

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Cubic Zirconia - Champagne - Barrel Cubic Zirconia - Champagne - Barrel

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Cubic Zirconia - Champagne - Cushion Cubic Zirconia - Champagne - Cushion

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Cubic Zirconia - Champagne - Marquise Cubic Zirconia - Champagne - Marquise

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Cubic Zirconia - Champagne - Pear Cubic Zirconia - Champagne - Pear

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Cubic Zirconia - Champagne - Round Cubic Zirconia - Champagne - Round

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Cubic Zirconia - Champagne - Square Cubic Zirconia - Champagne - Square

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Cubic Zirconia - Champagne - Trillion Cubic Zirconia - Champagne - Trillion

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Cubic Zirconia - Fire Opal - Barrel Cubic Zirconia - Fire Opal - Barrel

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Cubic Zirconia - Fire Opal - Cushion Cubic Zirconia - Fire Opal - Cushion

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Cubic Zirconia - Fire Opal - Marquise Cubic Zirconia - Fire Opal - Marquise

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Cubic Zirconia - Fire Opal - Pear Cubic Zirconia - Fire Opal - Pear

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Cubic Zirconia - Fire Opal - Round Cubic Zirconia - Fire Opal - Round

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Cubic Zirconia - Fire Opal - Square Cubic Zirconia - Fire Opal - Square

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Cubic Zirconia - Fire Opal - Triangle Cubic Zirconia - Fire Opal - Triangle

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Cubic Zirconia - Fire Opal - Trillion Cubic Zirconia - Fire Opal - Trillion

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Cubic Zirconia - Green Apple - Pear Cubic Zirconia - Green Apple - Pear

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Cubic Zirconia - Green Apple - Round Cubic Zirconia - Green Apple - Round

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Cubic Zirconia - Hessonite Garnet - Pear Cubic Zirconia - Hessonite Garnet - Pear

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Cubic Zirconia - Jet Black - Barrel Cubic Zirconia - Jet Black - Barrel

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Cubic Zirconia - Jet Black - Cushion Cubic Zirconia - Jet Black - Cushion

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Cubic Zirconia - Jet Black - Pear Cubic Zirconia - Jet Black - Pear

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Cubic Zirconia - Jet Black - Round Cubic Zirconia - Jet Black - Round

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Cubic Zirconia - Jet Black - Square Cubic Zirconia - Jet Black - Square

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Cubic Zirconia - Lavender - Barrel Cubic Zirconia - Lavender - Barrel

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Cubic Zirconia - Lavender - Cushion Cubic Zirconia - Lavender - Cushion

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Cubic Zirconia - Lavender - Marquise Cubic Zirconia - Lavender - Marquise

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Cubic Zirconia - Lavender - Pear Cubic Zirconia - Lavender - Pear

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Cubic Zirconia - Lavender - Round Cubic Zirconia - Lavender - Round

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Cubic Zirconia - Lavender - Square Cubic Zirconia - Lavender - Square

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Cubic Zirconia - Lavender - Triangle Cubic Zirconia - Lavender - Triangle

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Cubic Zirconia - Lavender - Trillion Cubic Zirconia - Lavender - Trillion

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Cubic Zirconia - Olivine - Barrel Cubic Zirconia - Olivine - Barrel

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Cubic Zirconia - Olivine - Cushion 10mm Cubic Zirconia - Olivine - Cushion

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Cubic Zirconia - Olivine - Marquise Cubic Zirconia - Olivine - Marquise

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Cubic Zirconia - Olivine - Pear Cubic Zirconia - Olivine - Pear

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Cubic Zirconia - Olivine - Round Cubic Zirconia - Olivine - Round

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Cubic Zirconia - Olivine - Square Cubic Zirconia - Olivine - Square

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Cubic Zirconia - Olivine - Triangle Cubic Zirconia - Olivine - Triangle

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Cubic Zirconia - Olivine - Trillion Cubic Zirconia - Olivine - Trillion

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Cubic Zirconia - Smoked Topaz - Barrel Cubic Zirconia - Smoked Topaz - Barrel

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Cubic Zirconia - Smoked Topaz - Cushion Cubic Zirconia - Smoked Topaz - Cushion

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Cubic Zirconia - Smoked Topaz - Diamond 9mm x 13mm Pkg - 1 Cubic Zirconia - Smoked Topaz - Diamond 9mm x 13mm Pkg - 1

Synthesized Cubic Zirconia (or CZ) is hard, optically flawless and can be made in a variety of different colors.

SALE Price: $3.00
Cubic Zirconia - Smoked Topaz - Marquise Cubic Zirconia - Smoked Topaz - Marquise

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Cubic Zirconia - Smoked Topaz - Pear Cubic Zirconia - Smoked Topaz - Pear

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Cubic Zirconia - Smoked Topaz - Round Cubic Zirconia - Smoked Topaz - Round

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Cubic Zirconia - Smoked Topaz - Square Cubic Zirconia - Smoked Topaz - Square

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Cubic Zirconia - Smoked Topaz - Trillion Cubic Zirconia - Smoked Topaz - Trillion

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Cubic Zirconia - Tanzanite - Barrel Cubic Zirconia - Tanzanite - Barrel

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Cubic Zirconia - Dark Tanzanite - Cushion Cubic Zirconia - Tanzanite - Cushion

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Cubic Zirconia - Tanzanite - Pear Cubic Zirconia - Tanzanite - Pear

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Cubic Zirconia - Tanzanite - Round Cubic Zirconia - Tanzanite - Round

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Cubic Zirconia - Tanzanite - Square Cubic Zirconia - Tanzanite - Square

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Cubic Zirconia - White Diamond - Barrel Cubic Zirconia - White Diamond - Barrel

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Cubic Zirconia - White Diamond - Cushion Cubic Zirconia - White Diamond - Cushion

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Cubic Zirconia - White Diamond - Oval Cubic Zirconia - White Diamond - Oval

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Cubic Zirconia - White Diamond - Pear Cubic Zirconia - White Diamond - Pear

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Cubic Zirconia - White Diamond - Round Cubic Zirconia - White Diamond - Round

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Cubic Zirconia - White Diamond - Square Cubic Zirconia - White Diamond - Square

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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 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.