There are the two inks on Clairefontaine Triomphe paper.
And here are the two inks on Tomoe River paper.
Parker Penman Sapphire is an ink that sheens a lot on Tomoe River paper, as you can see, and that’s another thing that sets PPS apart from Bung Box First Love Sapphire, especially in these pens.
There’s one very important thing about the color-balancing of these last two photos: you’ll notice a pronounced blue tint. That’s because Bung Box First Love Sapphire is very tricky to put across correctly in digital photos, and I had to accentuate the blue in some of my photos to make the Bung Box ink look like it does in real life.
That means PPS was darkened as well: PPS looks a bit lighter and less saturated in person than it does in the two photos just above this. But the comparison is accurate, and that’s what I was after.
Here are the inks at an angle, on Clairefontaine.
And on Tomoe River paper.
Now, I enjoy Bung Box First Love Sapphire. To me it’s a very sprightly and pleasant medium blue ink. It reminds me of Diamine Blue Velvet and KWZ Azure #3. I just don’t find, in the pens I’ve used, that Bung Box First Love Sapphire reminds me of Parker Penman Sapphire. The difference in hue is consistent for me no matter what paper I use.
But of course nothing is categorical in the pen and ink world. There is always pen choice to consider.
To wit, PPS is a wet ink — wetter than the Bung Box ink. I’m using both inks in the same pen here. If instead you put PPS into a very dry pen, and Bung Box First Love Sapphire into a very wet pen, the Bung Box might darken. And the difference might narrow.
In addition, because I have used both inks before, I know that PPS can look lighter in a broader nib. Here is PPS in a Kaweco Classic Sport with 1.1 mm calligraphy nib. I’ve used Bung Box First Love Sapphire with that same pen, and I couldn’t say that pen makes First Love Sapphire look identical to PPS, but they get closer.
Certainly different papers might affect the ink color as well.
So all of those factors certainly can come into play, and they could make Bung Box First Love Sapphire look more like PPS in certain situations. Not that the Bung Box ink needs that. Both are great-looking inks on their own terms.