Coarse Diamonds | Green Ring

Coarse diamonds — green ring — for crown and bridge preparation, fast enamel reduction, and efficient grinding. Every diamond in this collection carries its grit and ring color directly in the product title, matched to ISO grit code 53x.

The green ring is the preparation workhorse: aggressive enough for efficient reduction, controlled enough to prep to shape. Busch codes its coarse figures with a 6-prefix (6856 = coarse 856).

FAQ

What does the green ring indicate? Coarse grit under the standardized diamond color-coding system — see the color guide linked below for the full ladder.

Coarse or super coarse for crown prep? Coarse (green) preps most crowns efficiently with better surface control; reserve super coarse (black) for bulk removal.

Where are these diamonds made? Every instrument in this collection is manufactured by Busch & Co. in Engelskirchen, Germany — an ISO 13485-certified specialist in rotary precision instruments since 1905 — and ships fast from our US warehouse.

Reference resources: Bur Comparison Chart · Speed Chart · Color Coding & ISO Guide · Glossary

Further reading: Busch Bur Ring Colors Explained: How to Read Grit, Blade Count, and the Gold COO