28" x 19". This was one of the most difficult mosaic works I ever created. Some of the minerals were only 50 mesh, I had to use a magnifying glass to be able to inlay such tiny stones. It is not something I would advise anyone to attempt unless you are a very advanced mosaic artist. Hand sketched and inlaid with black Orca marble, red Dolomite marble, crystals of Calcite and trimmed with Chalcopyrite nuggets. There are only a few examples of this technique of mosaic I know of in the world.