2 verses have
visible
in Edition Clear Qur'an by Talal Itani / Al-Israa (The Night Journey)

17:45When you read the Quran, We place between you and those who do not believe in the Hereafter an invisible barrier.

17:59Nothing prevents Us from sending miraculous signs, except that the ancients called them lies. We gave Thamood the she-camel, a visible sign, but they mistreated her. We do not send the signs except to instill reverence.