Find Grit by Rock


Rock Chart for finding the right grit for some recommended rocks to tumble.

Rock Hardness and Grit Matching Chart

 Rock Name Hardness Product
Agate 8 Tumbler Grit Kit M8
Apatite 5 Tumbler Grit Kit M5
Garnet 7 Tumbler Grit Kit M7
Glass 1 Tumbler Grit Kit G2
Hematite 6 Tumbler Grit Kit M6
Jadeite 7 Tumbler Grit Kit M7
Jasper 7 Tumbler Grit Kit M7
Labradorite 7 Tumbler Grit Kit M7
Making Seaglass 0 Tumbler Grit Kit G1
Marcasite 7 Tumbler Grit Kit M7
Quartz 7 Tumbler Grit Kit M7
Petrified Wood 5 Tumbler Grit Kit M5
Rhodolite 6 Tumbler Grit Kit M6
Sodalite 6 Tumbler Grit Kit M6
Staurolist 7 Tumbler Grit Kit M7
Topaz 8 Tumbler Grit Kit M8
Tourmaline 7 Tumbler Grit Kit M7
Zoisite 7 Tumbler Grit Kit M7

 

Mixed Rocks note: your rocks should be of the same or similar hardness for best results. If your rocks are different hardness pick the grit kit for the high hardness number from the chart