Concise Bible Dictionary:

In Isaiah 2:1616And upon all the ships of Tarshish, and upon all pleasant pictures. (Isaiah 2:16) the expression “pleasant pictures” is supposed to mean “pictures of desire,” as it reads in the margin, referring to anything on which their hearts were set. In ancient Egypt the nearest approach to what is now called a picture, is the colored representations made on the walls of the temples and tombs. The walls in Babylon were ornamented with pictures on enameled bricks; these seem to be alluded to in (Ezek. 23:1414And that she increased her whoredoms: for when she saw men pourtrayed upon the wall, the images of the Chaldeans pourtrayed with vermilion, (Ezekiel 23:14); compare Num. 33:5252Then ye shall drive out all the inhabitants of the land from before you, and destroy all their pictures, and destroy all their molten images, and quite pluck down all their high places: (Numbers 33:52)). In Proverbs 25:1111A word fitly spoken is like apples of gold in pictures of silver. (Proverbs 25:11) “apples of gold in pictures of silver” probably describe some piece of jewelry judging from what immediately follows; others prefer to translate it “graven imagery.”