B23 Phthalo Blue フタロ・ブルー Derived from a bright blue chemical called “phthalocyanine”, which is used as raw material for a pigment. Sketch ¥380 (Tax not included)・・・・・・Shop Ciao ¥250 (Tax not included)・・・・・・・Shop Classic ¥380 (Tax not included)・・・・・Shop Refill ink ¥380 (Tax not included)・・・Shop
