Using lapis lazuli to get ultramarine pigment
From Kathleen Steiger, an article from Art Daily on how painters in the past used lapis lazuli to make ultramarine pigment:
ULTRAMARINE – How did the old masters make their ultramarine
From Kathleen Steiger, an article from Art Daily on how painters in the past used lapis lazuli to make ultramarine pigment:
ULTRAMARINE – How did the old masters make their ultramarine