Rosin for Violin and Viola Ideal for all Pirastro GOLDFLEX strings Gold-coloured. A slightly harder rosin mixed with gold dust; for general use. The Oliv rosin has the highest adhesiveness with a soft consistency. Piranito rosin has the lowest adhesiveness with a hard consistency. In between are the following rosins: Eudoxa, Obligato, Tonica, Gold, Schwarz (Black) and Goldflex.(Pirastro rosin brand names are indicating to which string line the rosin fits best - Obligato, Oliv - or to which instrument - Cellisto, Bass. Thus musicians may find their individual choice quickly.)