The phrase "although visible" is grammatically correct and can be used in written English.
It is often used to introduce a contrasting or unexpected second clause in a sentence. Example: Although visible, the stars in the sky seemed to disappear as the city lights became brighter.
The fourth line begins to shed a little more illumination on the matter: he is "absent" when present because, although visible, he remains unseen.
Skin cancer is one of the most common forms of cancer in humans and, although visible and therefore recognizable at an early stage, it results in significant mortality.
Although visible symptoms of anxiety gradually disappear its cortisol levels remain elevated, showing that it is more stressed than it looks.
McPherson is a dab hand at creating realistically flawed characters to whom one just about manages to give the benefit of the doubt, and the ending, although visible from some way off, is still shocking.
I can't always find the DVD or CD I'm looking for, and many of my books, although visible, are out of reach because of stacks and heaps in front of the shelves and no floor space for a ladder.
Although visible from the house, the 50-foot pool with its deck and lanai were placed about 10 feet lower in elevation than the house so the natural surroundings would not be obstructed.
Although visible-UV spectra have not been extensively studied for As sulfides, the instruments needed to perform such measurements are readily available.
Although not visible to the public, turning points in the cold war were occurring.
Although less visible internationally, Abu Dhabi is actually far larger and richer than Dubai.
Aliyev responded that although the visible side of Azerbaijan's relations with Iran appears normal, the substance was very different.
These private agencies, although very visible in the capital, are not set up to rebuild infrastructure for a major city.
