opal basil

Birmingham Opal Basil, likely a variant of Basil Pesto, is a vibrant green ink with brown undertones that shift greener upon drying, offering modest shading and wet flow ideal for varied papers. Known for its saturated color in the Everlasting Formula, it provides high water resistance and archival qualities, though it requires frequent pen cleaning to avoid staining. It suits enthusiasts seeking versatile, mixable inks for daily writing and creative mixing.