Abrasive Size Equivalency Chart

American Std. Micron Size Equivalent Mesh
1/4 0 – 0.5 100,000
1/2 0 – 1 60,000
1.0 0 – 2 14,000
1.5 1-2 13,000
2.5 2-3 9,000
3 2-4 8,000
4 2-6 5,000
5 4-6 4,500
7 5-10 2,800
9 6-12 1,800
14 8-20 1,400
15 10-20 1,200
18 12-25 1,050
25 20-30 800
30 20-40 600
35 30-40 500
45 40-50 325
55 50-60 285
70 60-80 240
90 80-100 225
110 100-120 160

ABRASIVE SIZE EQUIVALENCY CHART

Compliments ofThe International Gem Society

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