The image is a photograph of a blue plaque on a stone wall. The plaque is titled "The Cullinan Diamond" and is located in the National Monument Council. The text on the plaque is written in white and is in Dutch. Below the text, there is an image of a large, oval-shaped diamond. The diamond appears to be made of a light-colored material and has a smooth, polished surface. 

The plaque is rectangular in shape and has an arrow pointing to the right side of the image, indicating the direction of the diamond. Below that, there are two smaller text boxes, one for the diamond and the other for the national monument council. The first text box reads "The cullinan diamond, which had an original mass of 3106 metric carats, is the largest gem diamond ever to have been found. It was discovered by E.G. Wells, the mines surface manager, on 25th January 1905. About 610 meters from the surface of the southern face of the premier kimberly pipe. The accompanying model is a true replica of the Cullinanan diamond in its natural state."

At the bottom of the plaque, it reads "Die Cullinian diamant" which translates to "The largest diamond in the world." The plaque also mentions that the diamond was discovered in the southern part of the country.