Unless you’ve been completely ignoring new releases over the past two years, you’ll have noticed that nearly every pen company, ranging from larger manufacturers down to small-batch makers, has begun to release pens in a “rainbow” finish. How this coating is described varies from company to company: TWSBI has dubbed their Diamond 580 and Vac700R models as the “Iris” finish, Conklin and Fisher Space Pen both use the “Rainbow” moniker, and Ben Walsh of Gravitas Pens has branded the finish “Skittles.” Even Leonardo has released a limited edition Momento Zero (the “Prisma”) in collaboration with Italian retailer Stilo e Stile.
Gravitas pens offers a wide variety of “Skittles” finishes. The two shown here are Matte Paisley (center), as well as the darker TiSiNX finish (right), discussed further below.
So how exactly do companies achieve the “rainbow” effect? While most companies protect their exact processes - trade secrets and all - from what I read it appears to be achieved by applying a Titanium Nitride PVD coating, with different companies varying the formula to achieve unique looks. For example, Ben Walsh is releasing the Gravitas TiSiNX, which adds Silicon Nitride to the coating in order to achieve a darker blue/purple tone, and I was lucky enough to take home one of these pen from the D.C. Pen Show.
Comparing the standard Gravitas “Skittles” finish to the TiSiNX finish (right).
The coloring on the Conklin All-American is pretty intense, and also leans much more orange/yellow than the TWSBI Iris finish, which has a pink/purple/magenta tone. I think I prefer the more subtle options.
Because PVD coating is extremely durable, you shouldn’t have to worry about the finish wearing away. In my experience to date, the PVD coating has not affected writing performance, even where the nibs have been treated. And while the special finish typically comes with a small upcharge to the standard pen, it’s not much. The prices I’ve seen have remain reasonable, ranging from $80 for the TWSBIs to around $180 for the Leonardo.
Takeaways and Where to Find This Finish
I’m actually enjoying the “rainbow” trend far more than the “glitter pen” trend that preceded it, especially as companies such as Gravitas experiment with darker tones. Of course, any trend can suddenly seem overdone (looking at you, shimmer ink), and given how successful these pens have been, I think we can expect more pen manufacturers to release their own titanium nitride pens if they haven’t done so already. So far, most companies have exercised retraint, trying to differentiate themselves with unique design touches. For example, Leonardo paired the “Prisma” trim with a bead-blasted, matte acrylic. Kaweco has even released an “Iridescent Pearl” acrylic that achieves something of the same look, and it’s safe to assume that at some point, a rainbow AL Sport or Steel Sport will follow.
The variations in tone between the various models is not necessarily apparent until you compare different pens from different companies side-by-side.
What are your thoughts? Do you find this trend played out, or do you want to see more? Personally, as long as companies keep experimenting, I’m interested to see what manufacturers can do. I generally love PVD coated pens for their durability, and it’s interesting to see colors other than black.
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