3M™ Medium Diamond Kit

3M™ MICRO Diamond Kit


Perfect for repairing chips in gemstones or sharpening carbide tools. For lapidary work, use these steps before the 3M Polishing Diamond abrasives. This kit includes the following grades: 74, 45, 30, 20 Micron – 1 of each. Patented 3M™ Microfinishing Diamond Abrasive Grain.

Product Description

Our industrial grade 3M Microfinishing diamond abrasives are perfect for hard materials such as semi & precious stones, carbides, cobalt, tungsten, chilled iron, etc. Use wet or dry.

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 8 x 3 x 1 in

Lapidary Instructions


3M Material Safety Data Sheet


1 of each: 74, 45, 30, 20 Micron 3M™ Microfinishing Diamond Discs