Genuine Mississippi Shell Nuclei
Stained Nuclei Premium White Grade Nuclei
Stained Nuclei
Premium White Grade Nuclei
Bio-Coated Nuclei Mississippi River Shell
Bio-Grade Nuclei
Mississippi River Shell
Our nuclei are produced from the best quality Mississippi mussel shell, grading from superior white through several categories to stained nuclei used for Margaritifera pearl oysters.

All grades are free from holes, pits or scratches and are perfectly rounded with smooth surface.

Orca Marine also provides bio-coated nuclei, which is processed in Japan using the latest coating techniques.

We also re-grind, re-polish and re-grade used nuclei.