Appearance is different: amber is mostly irregular granular, massive, stalactite-like, granular, and sometimes contains plant or insect fossils, which are yellow, brownish yellow, reddish yellow, white or light yellow stripes, with turpentine luster and transparent to opaque; Rosin is solid, transparent, light yellow or brown.
Different melting points: amber can float in saturated salt solution; The melting point of rosin is lower than that of amber, and it will begin to soften when heated to more than 70 degrees.
Different values: the value of amber lies in antiques, exquisite works of art or biological relics and medicinal value; The value of rosin is mainly in industry.
Different smells: amber will give off a faint pine fragrance when rubbed and heated; Rosin smells much better when burned than amber.