Blue Pearl Ink
"I really enjoy this ink in my stub nib fountain pens and it's become a daily color for me. Blue Pearl shades well but with the silver particles, the shading can range from a light gray-blue to a darker blue.
Not sure how the particles will work in a fine or medium nib. They could cause a clog. The particles DO NOT create more cleaning for me. You can always let the particles settle to the bottom of the bottle and fill.
If you're a Doctor Who fan, the shading colors remind me of the TARDIS.
Get a sample and try it out."