This ammonite is 13 1/4" in length and 10" in height. It has great colors - very vivid. There are oranges, yellows, reds, greens and hints of blues, in all a rainbow that is unusual for its variety on one piece. Overall, a superb and very bright ammonite. A perfect size for most clients who want a classic example of this material but realize the larger ones represent a huge jump in price and, often, a lower quality than specimens in this size range.