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Diamond Donut Burrs


NEW Smaller Sizes! 12mm and 16mm. These unique Diamond Donut Burrs are slightly concave with a gradual raised point in the centre enabling you to carve and grind a ring, or a Donut shape, in a pre-drilled precious or non-precious stone or crystal. 80# with a 6mm shank, available in diameter sizes ranging from 12, 16, 20, 26, 30, 32, 36, 40, 45, and 50mm.  

Popular for use with a wide variety of gemstones such as Jade, and for use on crystal, hard woods, bone, ceramic, glass and stone. 

Please refer to the information under the technical tab for specifications and dimensions.

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How to use Diamond Donut Burrs:

Begin by drilling a small hole in your material with a Small Diamond Drill Bit (DDB1). 

Keeping your speed low (12,000 RPM), and using little to no pressure, with plenty of cold water, begin grinding using the pre-drilled hole as a guide for the centre of your donut burr. 

The two holes on the doughnut burr will enable the water to flow through the burr whilst you carve, keeping your material cool and preserving the life of your diamond bur.

Popular for use with Jade, Agate, Jasper, Obsidian, Tigers Eye, Lapis Lazuli, Crystal, Labradorite and turquoise to name but a few. You can use thread or wire with various bails and charms to create beautiful pendants, hooped earrings, wire-wrapped jewellery items, light pulls, key rings, and wind chimes.

We hope you have as much fun creating doughnut carvings as we have!

Always wear sufficient safety goggles and a face mask


Each burr is evenly electroplated with 80# (diamond grit) and impregnated onto a 6mm steel shank.

  • 12mm diameter: shank 6 x 40mm
  • 16mm diameter: shank 6 x 40mm
  • 20mm diameter: shank 6 x 40mm
  • 26mm diameter: shank 6 x 40mm
  • 30mm diameter: shank 6 x 40mm
  • 32mm diameter: shank 6 x 40mm
  • 36mm diameter: shank 6 x 40mm
  • 40mm diameter: shank 6 x 40mm
  • 45mm diameter: shank 6 x 40mm
  • 50mm diameter: shank 6 x 40mm

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