Diamine Indigo is a desaturated blue-black fountain pen ink with a moody, subdued character that offers smooth flow and good performance across all pen types. The ink features low shading and minimal water resistance, making it ideal for everyday writing rather than permanent documentation. It dries quickly in 15-30 seconds and is non-toxic, well-behaved, and suitable for both vintage and modern fountain pens.
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Reviews & Resources
Ink Review #1135: Diamine Indigo
Diamine Indigo is a desaturated blue-black ink with low shading, black sheen in large swabs, 30-second dry time on Rhodia, average flow, and low water resistance. It shows some feathering on copy paper but performs well on fountain pen-friendly papers.
Ink Review: Diamine Indigo - The Fountain Pen Network
This forum review details Diamine Indigo's flow rate as OK, good lubrication, no hard starts or dry-outs, with writing samples and images showing its performance across different papers and nibs.
great fountain pens and ink - Glenn's Pens
Glenn's comprehensive Diamine ink review includes Indigo Blue from the Old English line, describing it as having a flat appearance with fairly good color density and solid performance.
Diamine Indigo - Vanness Pen Shop
Vanness describes Diamine Indigo as a muted blue-black ink with low shading, black sheen in large swabs, 30-second dry time, average flow, and well-behaved properties despite not being highly saturated.
Ink details on this page were generated with the assistance of AI and may not be fully accurate.