Translation of "Cristallins" in English

Ses yeux, constitués de milliers de minuscules cristallins, absorbent la moindre lumière disponible.

His eyes, made of thousands of tiny lenses, collect every last bit of available light.

Voyager en Finlande serait vraiment génial. J'ai entendu dire que c'était un endroit magnifique, plein de gens merveilleux, de forêts sans limites et de lacs cristallins.

Travelling to Finland would be so amazing. I've heard it's a beautiful place, full of marvellous people, endless forests and pristine lakes.