L'Opera Jade Rosin

Manufactured in France, Jade L'Opera Rosin is a new refined formulation
with exceptional qualities of dust-free adhesion; it avoids metallic
residues, which do not help with adhesion and may indeed scratch
fine varnishes. The result is an incredibly refined rosin that produces a smooth
yet firm grip. Each rosin is mounted on a protective velvet cloth wrap
and comes with a protective container. Product of Thorvaldsson ©