Diamine Sapphire Blue is a vintage looking blue-black fountain pen ink from Diamine, available in a plastic 30ml bottle.

Produced in the UK since 1864, Diamine Ink offersa wide array of color choices and delivery systems, including various bottle sizes as well as cartridges for use in fountain pens.

Please note: Diamine is transitioning their bottle design to the newer style pictured here.You may receive the older or newer bottle depending on stock supply.