Sandblasted
sand·blast·ed | ˈsan(d)-ˌblastd
adjective
A jewelry piece that has been intentionally abraised with many pieces of a small, coarse material to give it a rough, unpolished finish
Sandblasting is the process of applying the surface of a solid object - often a type of metal - with coarse material to give a rough, unpolished finish. The intentional abraising was traditionally done with sand, but today may involve a number of different materials, gasses or air to create the same effect. Modern sandblasting involves shooting a stream of high-pressure air containing aluminum dioxide toward a piece of jewelry to create the unfinished look. This can be done for the final finish of a piece, or to facilitate a more complex finish involving other processes after the sandblasting is completed.