That's why today we have a synthetic equivalent. Whereas in the past blue was hard to come by today it is easily accessible to artist and designers alike. Ultramarine comes in a variety of shades from deep dark blue to violet to pale pink. They are all completely lightfast, compatible with each other and other pigments. They work in all media except cement or lime plaster.
Currently, there is only one ultramarine blue which works in plaster-- Ultramarine Blue Dark ( DCCR1). It is both acid proof and alkali safe.