30ml glass bottle of Diamine Registrar's Blue Black Ink. Archival Iron Gall and water resistant permanent ink for document signing. Diamine Registrar's Blue Black fountain pen ink is a deep shade of blue-black that leans towards black. Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side.
Volume - 30ml Bottle Material - Glass Color Group - Blue-Black Special Properties - Iron Gall, Water Resistant
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