20 Micron 3M™ Microfinishing Diamond 2-pack (Very Fine)


Perfect for repairing chips in gemstones or sharpening carbide tools. Use this VERY FINE step as part of the process for lapidary work. This item includes 2 discs of 20 Micron grade for Very Fine Grinding / Shaping. Patented 3M™ Microfinishing Diamond Abrasive Grain.


This is a 2-pack of the VERY FINE grade (20 micron/500 grit) of the 3M microfinishing diamond family. Perfect for hard materials such as semi & precious stones, carbides, cobalt, tungsten, chilled iron, etc. Use wet or dry. For high-polished finishes, follow up with 3M™ PREMIUM Polishing Diamond Kit. Uses for Microfinishing Diamond Abrasives include: For Lapidary & Watch Crystal: Ideal for cutting & shaping stones as well as smoothing out chips. Also removes heavy to fine scratches on watch crystals. For a higher polish on your stones or glass, use the 3M™ PREMIUM Polishing Diamond Kit after these Microfinishing Diamond abrasives. For Carbide Tools: Sharpen router bits, forstner bits, shaper cutters and various other tools & remove chips. The sharper-than-factory finish reduces heat build-up during tool operation.

Additional information

Weight 0.1 lbs
Dimensions 3 x 3 x .125 in

3M Material Safety Data Sheet

What's in the box?

2 discs of 3M™ Microfinishing Diamond abrasives – 20 Micron grade. (Very Fine Grinding)


Lapidary Instructions