You might have wondered why I ordered a pencil from Cult Pens last week. And that would be because I was ordering a few other things that were 100% exclusive to Cult Pens so I threw the pencil in with the rest of the order, because why not? I was already paying shipping and tariffs so, in for a penny, in for a pound sterling, right?

Wha compelled me to brave tariffs and fees and international shipping, you might ask? That would be the Diamine Deadly Nightshade ink (£13.00 GBP for 50ml bottle) that was exclusive to Cult Pens. What’s so special about this ink?
I probably would have purchased it for the name alone but it is a purple sheener ink with silver shimmer in it as well. And… insert dramatic dirge music here… floating skulls in the bottle to act as mixing beads!

You read that correctly. Floating skulls. There was a great photo on the CultPens site. I did my best to get my skulls floating upright and visible but in the end, they look more like two teeth. Which is equally creepy so I’m going to go with it.


The ink color is a pinky purple with a clear green sheen. And the shimmer adds a little sparkly moonlight. Yes, I really do want everyday to be Halloween.

I tested the ink with a variety of pen tools. The sheening is definitely more visible in wider nibs. There is not a ton of shimmer which I don’t mind. If I see a little shimmer that’s cool but there is so much sheen that I think it would be distracting if there was a a crap ton of glitter too.

I compared the Deadly Nightshade to the purples currently in my collection first. I needed to compare it to Monteverde Birthday Cake (one of my favorite inks) which is not a sheener and quite a bit bluer violet than the Deadly Nightshade. Colorverse Delicious Sleep is closest to the color in my stash but also not a sheener. So if you like the color but don’t want sheen or shimmer, I’d recommend it as an alternative.

I tried to compare the Deadly Nightshade to other sheener or shimmer purple inks. I think the Taccia Murasaki Purple is the closest to the Deadly Nightshade base color. The Bungubox L’Amant reminds me of the lighter, finer writing samples above. Neither of these are sheen or shimmer inks.
The Kuretake Art Nouveau Perkin Mauve is the only other sheener purple that was similar but the sheen is darker making the ink feel like a purble black.
In the shimmer inks, Diamine’s Purple Pazzazz has a gold shimmer, Esterbrook Shimmer Lilac is lighter than Purple Pazzazz and has a lighter gold shimmer. Jacques Herbin 1789 Amethyst de L’Oural has a silver shimmer and finally Robert Oster Barossa Grape has a gilver shimmer which gives the ink a different feel altogether. None of the shimmers in my library were also a sheener so if you like the idea of purple but not sheen consider one of these options instead.
Final Verdict:
I do think I prefer the Deadly Nightshade in a finer nib as I can see more of the color of the ink and a hint of the sheen. The shimmer is cool but not a make a break for me. Diamine’s shimmer particles are fine enough now that I don’t worry much about it clogging.
YES! I love the addition of themed mix beads like little plastic skulls in an ink called Deadly Nightshade. This is a great way to plus up an ink and make it more fun to use. I want to see more of this! But, Diamine and Cult Pens, could you make it a little easier for US customers to get a bottle? Let’s collab! I have ideas!
Now, for the really big news…
Giveaway:
I didn’t just buy one bottle of this ink. I bought another bottle of Deadly Nightsahde to give away to ONE lucky reader.
TO ENTER: Leave a comment below and tell me what other POISON inks you’d like to see. Or what floaters you think should be added to ink bottles. Play along and type in something. It makes reading through entries more interesting for me, okay? One entry per person.
If you have never entered a giveaway or commented on the site before, your comment must be manually approved by our highly-trained staff of monkeys before it will appear on the site. Our monkeys are underpaid and under-caffeinated so don’t stress if your comment does not appear right away. Give themonkeys some time.
FINE PRINT: All entries must be submitted by 10pm CST on Saturday, June 6, 2026 at 10pm Central. All entries must be submitted at wellappointeddesk.com, not Instagram, Tumblr or Facebook, okay? Winner will be announced on Monday. Winner will be selected by random number generator from entries that played by the rules (see above). Please include your actual email address in the comment form so that I can contact you if you win. I will not save email addresses or sell them to anyone — pinky swear. If winner does not respond within 5 days, I will draw a new giveaway winner. Shipping via USPS first class is covered. Additional shipping options or insurance will have to be paid by the winner. We are generous but we’re not made of money. US and APO/AFO only, sorry.




















