A sedimentary rock formed by the compacting of grit or sand with a high silica content bound in a natural cement-- the silica itself. Many types of sandstone are soft and easily eroded, but some are quite hard and durable. Sandstone is generally more difficult to carve than limestone, for the particles wear down the metal of the chisel. Some sandstone can be polished.
A painting or sculpture whose composition, colors, and subject are selected to tell a story.
Example: Trajan's Column, Rome, Italy, 113
An aspect of modern art in which pieces of art contain no recognizable figures or objects, as opposed to figurative art.
Example: Sam Francis' Around the Blues, 1957/1962
A very pale blue that is invisible to a camera or photocopier. A non-photo pen or pencil may be used to make notes on an original: paper may be printed with a non-photo blue grid to allow for easy line-up. In either case, as copiers become more sensitive, you should advise your customer to test these products first.