The mark consists of a black square with a thick white border. The letters "GB" are written in the top lefthand corner in white and pushed into the border at the top and the left. Under "GB" is the word "GRANITE" in white with the "G" pushed into the border on the left. Under "GRANITE" is the word "BROTHERS" in white with the "B" pushed into the border on the left. All the text is written in bold capitalized letters.
Color is not claimed as a feature of the mark.
"GRANITE"