Kafko KVRWD Dark Violin/Viola/Cello Rosin Go to amazon.com Related posts 12 best violin rosin dark for 2022 FeatureDark rosinFor Violin, Viola and CelloPerfect for synthetic and natural hair bows DescriptionDark Violin, Viola and Cello Rosin. This refined violin rosin is perfect for synthetic and natural hair bows.