Classic specimens of this mineral assemblage are truly treasured by their owners. The structures are similar but serandite has a significant percentage of manganese ions which substitute for a portion of the calciums in the pectolite. It is the manganese ions which cause the pink color of serandite. Several other manganese minerals have a distinct pink color such as the carbonate rhodochrosite and the silicates rhodonite and inesite . However serandite's color is more of a salmon pink the these pink minerals and it has a silky luster that is distinct.
Color is pink to reddish pink and off white.
Luster is vitreous to silky. Transparency crystals are transparent to translucent. Also massive and compact. Cleavage is perfect in two directions at close to right angles. Fracture is splintery due to the cleavage.