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Quantity
1
The finest British-made fountain pen ink – now in a mini 5ml sample bottle!
Named for the deepest point of the ocean (the Mariana Trench) this deep blue ink reflects the ocean’s mystical depths.
Transform the way you create with an ink col...
Reviews
5.0
48 ratings
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Lighter than expected
This color is pretty, but is much lighter in person than I expected it to be.
K
Kelli · February 16, 2026
Beautiful blue
Love this lovely blue colour and the ink writes beautifully with the lumos pen using the 0.5 writing tip.
B
Beris · December 29, 2025
Like the mini inks. Great to test before buying a large bottle. Brillant color.