This ink is AMAZING. I purchased this along with a Z24 converter for my Lamy Safari with an EF nib. The blue that the Safari came with was much too light and diluted for me, so I chose this ink after reading many reviews and considering many options. I could not be happier. The blue is VERY dark, but it is not even close to being a "Blue-Black" ink. There is a very light, red sheen that makes the ink pop even more from your paper. This is definitely becoming one of my staple inks.
About Diamine Ink
Diamine Inks was originally founded as T. Webster and Co. in London in 1864. Over the next century, the brand experienced many changes in ownership and location, but continued producing high quality fountain pen, calligraphy, drawing, and writing inks. In 1964, the name "Diamine" emerged, and now Diamine Inks are experiencing a revival and are becoming more widely available in North America.