From the manufacturer of Jade rosin, their newest offering is L'Opera Or & Argent Master Rosin for violin, viola, and cello. This is made from a special recipe which includes synthetic gold powder.
Made in France.
THORVALDSSON
SAINT AGNIN sur BION, L'Orme
38300 BOURGOIN-JALLIEU
France
alexandre.thorvaldsson(at)wanadoo.fr