Description 1 Review This TWSBI Obsidian fountain pen features a gorgeous black marbled acrylic resin, accented by rosegold-plated trim, and comes with a rosegold-plated stainless steel nib in a size similar to the TWSBI 580 nib. As with all TWSBI pens, it comes with a piston ink-filling mechanism and has all detachable parts. An ink window allows you to see your remaining ink level. The pen cap will physically fit onto the back of the pen body in a way that would be considered to be posting, but TWSBI recommends not doing so to avoid scratching the barrel. The TWSBI Obsidian fountain pen is a limited edition, and will have a short production run. Grab yours today! TWSBI believes that it is important to allow the user to disassemble and reassemble the pen, in order to completely experience the traditional aspects of owning and using a fountain pen. The TWSBI pen packaging includes a wrench and silicone grease. ** Please note that these accessories are not intended to be used immediately, as they are better used for long-term care and maintenance. In addition, please use extra care if you choose to disassemble the pen, as breakage or cracking could occur if done incorrectly. We offer Free Shipping on all orders over $69 for US customers! 1 Review Hide Reviews Show Reviews 5 Twsbi Obsidian Posted by Julie Scott on Dec 30th 2025 I love Twsbi pens. They write smooth and don’t dry out. The Obsidian is beautiful and I am enjoying using it very much.
5 Twsbi Obsidian Posted by Julie Scott on Dec 30th 2025 I love Twsbi pens. They write smooth and don’t dry out. The Obsidian is beautiful and I am enjoying using it very much.