When it was just them, he held them close (barely weighing anything in his arms) as he wandered around their home in the middle of Telperion's hours, from the bedroom to his forge, giving them a tour while trying to lull them both to sleep.
Their fëa, while indeed much weaker when apart, became much stronger when shared together as one, and despite the claim to Nerdanel that they were still two separate beings, he could never bear separating the two.
The fuzz of their hair became a more distinctive red, like two bright embers lit from his forge of roaring flame.
My little embers, he thought with a fond chuckle as he watched one of the little ones yawn, stroking the babe's unblemished cheek with his own calloused finger.
They would have resembled Neylo as babes if not for the fact that he eldest had been born massive in comparison, and their eyes…while Neylo had clearly inherited the burning silver of his eyes, the Ambarussa's eye colors began to settle toward the lovely gray-blue with a tinge of green, like their mother's, but brighter (like Turko's and Moryo's).
They were so alike in face and mood, even as babies, that it was nearly impossible to tell them apart, though sometimes one would cry while the other slept, and then when the former finally fell asleep, the latter would then repeat.
One of them had a birthmark over his left breast (he had discovered on the day of their birth), which partially helped tell them apart when it became confusing, though in appearance, it looked like the curling emblem of a flame.
His wife's haunting claim for 'Umbarto' rang in his ears, but again he dismissed it, refusing to let such a dark foretelling master his thoughts.
Watching his twin sons sleep curl up around one another in their shared bundle, cradled in his arm, his fingers trapped in both their tiny grasps where could feeling their tiny fluttering heartbeats in their chests, Fëanáro thought with a burning frenzy, which practically blinded his conscious mind to a certain possessive paranoia of late, that there was nothing he wouldn't do to keep them safe.
(And nothing he wouldn't do to anyone, or anything, that tried to take them away from him).
'Neylo'=Neylafinwë, Maedhros' father-name
'Turko'=Turkafinwë, Celegorm's father-name
'Moryo'=Morifinwë, Caranthir's father-name
