on saleRobert Oster Crystal Marine - 50ml Bottled Ink

Product Code RO-15263

In Stock

out of stock

on saleRobert Oster Crystal Marine - 50ml Bottled Ink

Product Code RO-15263

In Stock

out of stock

50ml Bottle

50ml plastic bottle of Robert Oster Shake ‘N’ Shimmy shimmering fountain pen ink in the color Crystal Marine.

Robert Oster Signature Inks are handmade in Australia. The recyclable PET bottles are manufactured in Australia's first carbon neutral plastics plant.

Note: Robert Oster is in the process of changing the labels on their bottle and the label on the bottle you receive may vary from what is pictured here.

Due to the amount of particulate in this ink used to achieve the sparking look, you may experience restricted ink flow in some of your pens. We recommend shaking the ink thoroughly before filling and gently rolling the pen in your hands often to keep the shimmer effect consistent. This will also help prevent clogging. You will also want to be diligent about cleaning and maintaining your pen when using this ink.

A message from Robert Oster:

My great interest in fountain pen inks – and by extension inks that combine many creative applications – began with the birth of my love of fountain pens in 1989.

As Robert Oster Signature Inks are quite recent to the market, think of the interim between 1989 and today, as the fertile ground into which my present love of all things ink was seeded and grown.

The contents and packaging of my Inks are all nature friendly and the colours a genuine inventory of the Australian palette.

Robert Oster Signature originates from one of the most famous wine producing regions of the world, the Coonawarra district of South Australia, an idyllic setting with great influence on the senses. There is my inspiration. It’s a joy to share it with you.

Robert Oster states "For calligraphy & ink art pens, brushes & airbrush applicators. May contain pigments”.

Robert Oster
Bottled Ink
Turquoise, Green
Bottle Material
Bottle Opening Diameter
17.4mm (0.69in)
Fast Drying

Whether or not the ink contains glittery particles.

Freeze Resistant

Whether or not an ink is specially formulated to better withstand freezing temperatures.

Iron Gall

Ink made from iron salts and tannic acids. Though quite permanent and waterproof, these inks are typically known for causing chemical corrosion to metal pen parts (especially the nib) and should be used sparingly or with less-valuable pens.


Whether or not an ink is specially formulated to increase flow in your pen.


Whether or not the ink contains finely-ground solid particles in liquid suspension.

Water Resistant

Whether or not the ink, once dried on the paper, will resist being washed away with water.


Customer Reviews

Based on 5 reviews
Michael C.
Gorgeous ink

Great color and texture, and Drew was right: the shimmer makes the color a perfect teal. Rich and deep, it's a joy to write with. I suggest a Goulet stub nib!

Abigail H.
Gorgeous Teal

This is a truly beautiful teal ink. I use it in my LAMY All-Star, and it is consistantly vibrant and lovely. It dries quickly with no smudging using a medium nib. I definitely recommend it.

Caroline E.
Clogs like none other

Look. This ink is drop dead gorgeous, no doubt about it, but it clogged up my pen CONSTANTLY. I put this in my LAMY Safari with a fine nib, which has always handled glitter very well and is never finicky, but I'm always messing around with my nib and my converter when I'm writing with this. Letting my pen sit for even 15 seconds uncapped can cause the nib not to write and I have to scribble off to the side or lick the tip of the nib, and it's also had trouble writing after a day or so of sitting capped. Obviously, this won't be a problem with a glass nib or other dip pen, but for fountain pens, I'd be very cautious. When you CAN get it to write, the flow is very nice and dry time is decent, so no complaints there. It IS almost beautiful enough to warrant all the trouble, so it still gets three stars.

Robert B.
Beautiful color that has it all, shimmer and pretty shading

I have had a pen inked up non-stop since receiving this ink. I thought it might be like this or that ink.. but have found it to be unique. I can see finishing this bottle of ink... It is a top favorite.

Meghan C.
One of my favorite shimmers!

At first I had this in a Pilot Plumix and it wasn't really a good fit. Now I have this ink in a TWSBI Eco and I love it. The contrast between the greenish ink and bright blue shimmer is fabulous!

FAQs about Bottled Ink

Which pens can accept this ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Any of these fountain pens will work with bottled ink. Typically, as long as the pen can be filled with a converter, has a built-in filling mechanism like a piston, or can be eyedropper-filled, it can accept bottled ink.

What is shading, sheening, or shimmering ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Shading - A common (and often desired) result of a fountain pen ink pooling in certain parts of a letter when writing, so that the color and saturation of the ink appears different within a single letter or word. This characteristic cannot be achieved with ballpoint or rollerball pens and is a very appealing aspect of fountain pen use for those particularly drawn to all the pretty ink colors.

Sheen - Characteristic of a fountain pen ink where when ink pools another color can be seen on top of the ink, especially when looked at in different light angles using certain paper types. There is no way to guarantee an ink will sheen, but using a larger nib on a pen will help obtain sheening results in your writing.

Shimmering - Fountain pen ink that has small particles of glitter mixed in.

Is shimmering ink safe to use in fountain pens? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Yes! Shimmering ink is a great way to add some flare to your writing. We have found that a larger nib will showcase more shimmering particles while writing, but you can use any nib size and shimmering ink. All the ink we sell is safe for use in fountain pens.

You can learn more in our blog: How to Write with Shimmering Ink.

My ink smells funny, is it safe to use? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Generally yes! Ink does not smell good- it usually has a chemical smell, along with other scents such as sulfur, rubber, chemicals or even paint. However, as long as you’re not seeing anything floating in the ink, it should be safe to use.

It’s cold and my ink froze; is it safe to use? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

Yes, frozen ink will not hurt your pen (after it’s thawed of course!) The issue with ink freezing is primarily a concern because certain glass bottles could break as the water-based ink expands, and then you’d have a mess!

What is your return policy for bottled ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We do not accept returns for ink that has been used. Otherwise, we accept returns on unused ink products for up to 30 days from purchase. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.