I'm looking for a vibrant turquoise. It shall be more a saturated ink because I like inks with a percentage of dyes. I know there is the risk of staining and clogging with high saturated inks, but so far I had never had any problems. Some of "thinner" inks like Waterman aren't so much my type, because they just look too pale. So I don't like to go with South Sea Blue. Same with Diamine, although I've never tried Diamine yet, but I've read a lot that Diamine inks in properties are comparable to Waterman inks and this is enough for me to know that I should carefully avoid them in order not to get too annoyed of having bought a ink that I don't like so much.

The colour shall be dark enough to use it in office work, but eye-catchy that it can be used for corrections and marking text passages. It doesn't matter if it feathers and bleed through or not. And drying time is also not very important as long as the colour is vibrant enough. The flow shall be very good, because I'll use the ink in dry writers with F and M nibs. Shading effects are not important, they're nice to see, but I don't care too much about them as the effects in an F nib is barely visible, anyway.

I have thought of Navajo Turquoise of Noodler's and of Naples Blue of PR, and also of Lake Placid Blue although perhaps Lake Placid is a bit too dark to be a real turquoise. It can be a bit darker blue, a blue-turquoise. The Daphne Blue does not appeal much to me ... looks very pale, like a Waterman colour ...

What are your experiences?

Depending on how you define turquoise, Noodlers Ottoman Azure is a blue with a kind of sea green tint in it.

Ottoman Azure seems a bit too dark and grey for me. It must a colour that catches the eye, when I use it for correcting and marking. Ottoman Azure seems to be quite dark and not vibrant enough.

Navajo Turquoise, Naples Blue and Lake Placid (although not a real turquoise) go in the right direction that I like ... but as I've never seen those colours in real, I'd just like to ask a bit, especially flow issues as I depend on very free-flowing inks as I have very dry writers

I have tried Noodler's Navajo Turquoise and only have Lamy, Skrip, and Pelikan turquoise to compare it to. It is easily the most saturated of them and I like it very much. The only reason I haven't broken down yet to buy an entire bottle is that it dries very slowly compared to the others. Still it is quite beautiful. (eta: the flow is excellent, also, not too wet, not too dry.)

If you don't mind mixing, I've found that a 1:1 mix of the Lamy Turquoise with Pilot Blue gives a very nice deep turquoise with a little bit of water resistance from the Pilot blue.

Thank you a lot for the mixing recipe, but I fear there is nowhere a source here where I live where I can get Pilot ink from.

Noodler's Navajo is very saturated, to the extent that I feel the need to water it down when I use it. It is of a similar colour to Waterman South Seas Blue, so if you like that colour but want more saturation, go with the Navajo. It's quite the lovely colour.

Turquoise is my fave colour, though I have a deep fondness fo orange as well.
My fave turquoises:

Noodler's Navajo
Conway Stewart Turquoise
PR Blue Suede (kinda turq/green)
Visconti Turquoise

Various degrees of saturation, so maybe you could try these and see which ones fancy your tickle.

The best choice to meet your requirements in my opinion is Private Reserve Naples Blue. It is absolutely gorgeous.

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That's it!! Forgot about that one. Thanks MrJ, for reminding me to look through all my bottles of ink...

I have both navajo and lake placid, and they are very different colors. NT is great, a bit bright for me to use often, but for marking documents it would be perfect, and from what I understand it is a good color to use as a base for experiments in ink mixing.

Very satisfied w/ my Visconti Turquoise, loaded into my Parker Insignia (w/ turqoise swirls).

Thank you for the replies - I think Navajo Turquoise seems to be the winner. Well if I shall have the opportunity I'll have a look at PR Naples Blue as well - you can never have too much ink!

I like Pelikan Tourquiose. It's was what I used exclusively for the last 4-5 years. I find the colour distinctive and yet dark enough for business use.

Just my 2 cents.

Naples.

Naples blue is excellent. it is one of my everyday colors. I have my Waterman Phileas and my duke are loaded with it. Highly saturated, gorgeous. Like the Aegean sea in sunlight.

I use Pelikan Turquoise (diluted) for work purposes, and have done so for 15 years.
It isn't very saturated as the diluted ink. It's quite dark when undiluted, and moderately saturated.

To be honest it's not far off the Diamine ink. The flow & everything from both is good.

Regards

Richard.

Bleu pervenche from J.Herbin is a beautiful turquoise. It is good to read on whith paper not to light. I use it in cardridge with a waterman graduate pen nib fine. The better is to test it. But it is not a green or a blue color, it is turquoise for me, a little more blue than the turk sea which is green.

I'm surprised that you find Waterman SSB too pale. I've found it to be one of the darkest turquoise inks (though my bottle is probably about 20 years old now - maybe they changed it, like they did with the Havana Brown). It's almost identical to Lamy turquoise in darkness and intensity, though I find the Lamy ink rather nicer in terms of lubrication and shading. I like Lamy the best out of the turquoises that I've tried (the others being Waterman, Montblanc, old Sheaffer Peacock Blue, and PR Naples Blue). PR Naples Blue is certainly intense, but I'm not keen on its lack of shading. I haven't tried any of the Noodlers turquoise-like shades, but I've read that Ottoman Azure can vary a bit from batch to batch. Another candidate might be the Rohrer and Klingner Blue Mare - I've not tried it, but I have their Helianthus and find the flow, lubrication and shading outstanding.

I don't like Lamy ink very much, either. It's not a bad ink, however, but it's one of the inks that once I use it, I start to dream whether there is a nicer one. Not the best condition for buying a new bottle and not pouring it down the sink. eventually.
I haven't tried Waterman SSB and Lamy turquoise, but I've written with Waterman Florida Blue and Black and Lamy Black for a (short) while. While as a black ink there are better inks than WM and Lamy Black for me, I didn't dislike the Florida Blue as the flow is good and the colour is OK, just I have never been that obsessed with Florida Blue like some pen lovers that I know. It's not a bad ink, but it doesn't meet my demands. It looks a bit too pale, so waterly washed out to me. I just guess that the SSB is about the same, and I don't have the desire to test it, really. I can't imagine it to be much different from Florida Blue, and that's enough for me to know that I probably won't love this ink. Waterman makes wonderful pens to me, but I don't like their inks.

[edit] And by the way, I've ordered Naples and Navajo Turquoise to try them - mostly because of the scans I've seen and because of the reputation of these two manufacturers as their inks have the reputation to be very vibrant, saturated. Some of them even with extensive flow. I've had some good experiences with PR inks (with some exceptions, as usual) and hope the Noodler's won't disappoint too much.

Good choices. I've played around with Navajo Turquoise [and the identical-looking American Eel variant] and it's a vibrant hue, full of punch. Never heard of any flow issues or other complaints about it yet. Enjoy

The darkest Turquoise shade I know of is De Atramentis "Stahlblau / Steel BLue". Great, unique colour.