this rock is very heavy and has a stripe going threw it, each rectangle print has 3 lines in the rectangle so you can say there is 3 skinneyt rectangles that make the one rectangle. this rock is very rough like the black material around the rectangles kinda puffs up making it more rogher looking, the rectanglers are more whitish more of a scratch type of look. i soaked it is sum rcl solution in hopes of getting rust off. the rock turned much blue and green is sum spots. i am new into the rocks and probally dont have the terminology of rock description, i described as best as i could if you can help or need to ask more questions please ask thank u