Rated AAA, our lab created cubic zirconias are beautiful as natural diamonds. 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 diamonds 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.
Ring shown was created by Alexander Kraft using Cool Tools Cubic Zirconia and EZ960® Sterling Silver Clay. Stones include: Champagne Barrel Checkerboard, Amethyst Cushion Checkerboard and White Diamond Cushion Checkerboard.
"I've been looking for more suppliers of gemstones for my jewelry making. I was surprised to find that a place called "Cool Tools" would be such a varied supplier. I have saved their address in my bookmarks and my pocket, so I can return easily. Keep up the good work! Thanks!"
— Karen W. (5/5)
Not as advertised
"Despite being advertised as 13x18mm, this cabochon was a lumpy 12x16-ish and not at all as clear as the cost demanded. Had I known in advance- I would have just bought the glass equivilent. I submitted an email back in November asking to replace it with the advertised size- but have yet to hear back."
— Storm (1/5)
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