In an effort to provide elucidation on the different Gamut sheep and beef gut string options for our customers, please be aware:
All Gamut Academie strings (pure gut and gut/metal-wound) are made with beef serosa unless they specifically say "Sheep Gut."
All pure gut Tricolore violin and viola strings are made with sheep gut. All gut/metal-wound Tricolore strings are made with beef serosa, as they historically have been.
Red Diamond Strings
Red Diamond bass strings are made with beef serosa.