I've never tried a glass pen however this writes beautifully and makes changing ink colors simple,

Moody, navy blue leaning heavily into slate grey. It sits right in the pocket of a versatile blue-black—dark enough for professional and everyday writing, but distinct from standard royal blue or stark black.

This glass muddler has quickly become my go-to tool for ink swatching.
The smooth glass surface spreads ink cleanly and evenly across the page without snagging or absorbing pigment. Cleaning between colors is effortless—just a quick rinse in water and a wipe with a paper towel, so there’s zero cross-contamination when jumping between inks.
It’s also surprisingly compact. It slips right into a pen case or travel pouch, making it easy to bring along on coffee runs or sketch outings without taking up precious space. Simple, functional, and very well made.

perfect

I love my new TWSBI Eco. It was such a pleasure to be able to test pens at the shop and really be sure of my decision. It's a joy to write with, especially with the shimmery Ferris Wheel Ink I got to go with it!

I love these washi stickers. They are beautiful and a fun little addition to my journal. Great find ❤️

Bought this TWSBI for my teenage daughter as a gift and so she’ll give mine back to me. Great pen and writes really well. Really good starter pen for those just getting into writing with a fountain pen. Great every day pen and workhorse.

I fell in love with the colour and design of this pen so made an impulse purchase. Use it all the time now.

These stickers are adorable, detailed, and go great as little accents on my notes! I will likely purchase again.

Got this ink for my Twsbi but it was so nice inked up a few of my other pens with it.

This looked blue in the store but on paper look more black

You can’t go wrong with any Blackwing pencil sets and this one is no exception. The pencils are truly beautiful and a dream to write or draw with. They don’t smear, the lead doesn’t crack or cause issues. The color is pure and consistent. A great addition or starter set!