Electroplated Diamond Burs – Gemstone Shaping & Grinding

Precision Grinding | Colour-Coded Grits | Affordable Gemstone Shaping

Grotto Gemstones Electroplated Diamond Burs are designed for gemstone shaping, grinding, removing unwanted material and preparing stones for finer sanding and polishing.

Manufactured with diamond abrasive particles bonded to the bur surface, these versatile tools provide effective cutting performance across a variety of lapidary applications.

Electroplated diamond burs offer an affordable introduction to gemstone shaping without the higher initial investment associated with sintered diamond burs.

Suitable for working with Australian opals, quartz, agate and other compatible gemstones.

Available Grit Options

Our electroplated diamond burs feature four colour-coded grit grades:

• Black – Extra Coarse: Initial shaping and heavier material removal.

• Green – Coarse: General gemstone shaping and grinding.

• Blue – Medium Coarse: Refining gemstone shapes and removing earlier grinding marks.

• Red – Fine: Smoothing and preparing gemstone surfaces for subsequent sanding and polishing.

Mixed Grit Pack: A convenient assortment of different grit grades, allowing you to experience multiple stages of gemstone shaping and grinding in one pack. Ideal for beginners looking to experiment with different abrasives and for experienced lapidarists wanting a versatile selection.

Features & Benefits

• Electroplated diamond abrasive for effective gemstone grinding.

• Four colour-coded grit grades for easy identification.

• Mixed grit pack available for greater versatility.

• Affordable alternative to sintered diamond burs.

• Suitable for compatible rotary hand tools and flex-shaft machines.

• Useful for Australian opals and a variety of other gemstones.

• Ideal for beginners, hobbyists and experienced lapidary enthusiasts.

Grotto Gemstones Workshop Tip

Always use suitable water cooling while grinding to help prevent overheating of both the burs and gemstones.

Use light, controlled pressure and allow the diamond abrasive to do the cutting. Progress through the appropriate grit grades to achieve a smoother finish before polishing.

Important: Unlike sintered diamond burs, electroplated burs should not be dressed or sharpened using an aluminium oxide sharpening stone. Doing so can damage or remove the surface-bonded diamond abrasive and shorten the bur's working life.

Clean and dry your burs thoroughly after use.

Safety: Always wear suitable eye protection and use effective dust control. A correctly fitted P2 respirator is recommended where airborne hazardous dust may be present; wet grinding helps reduce dust but does not eliminate all exposure risks. Keep fingers clear of rotating burs and ensure mains-powered tools and electrical connections are protected from water. Follow the manufacturer's operating and electrical safety instructions. Children must be closely supervised, and powered grinding equipment should only be used by suitably trained operators.

Grotto Gemstones & Tools Australia

Supporting your gemstone journey, from rough to polished.