Diamine Inkvent Teal Edition - Molten Basalt Fountain Pen Ink

Diamine Molten Basalt is an almost-black brown-green with subtle, unusual sheen. Dark enough for serious notes but stranger than black, it reveals its green character when the line pools or washes out.

First revealed behind door 13 of Diamine's 2025 Inkvent Teal Edition, it is available here in a generous 50mL bottle.

This is a straightforward dye-based fountain pen ink with no added shimmer. Its final shade and shading will vary with nib width, ink flow, and paper.

Details

• Standard fountain pen ink
• 50mL glass bottle
• Water-based, non-toxic, acid-free, and vegan-friendly
• Made in Liverpool, England