Aquamarine is found in Brazil, Zambia, Mozambique, Angola, Nigeria, and other countries. Aquamarine is always a pastel blue but the darker the color, the more valued it is. Professionals prefer a pure blue, with no green in it. Stones with a greenish tone are less expensive. Because the color is generally pale, aquamarine should have a good clarity. These stones are often cut in ovals and emerald cuts. More saturated colors are unusual in small sizes: usually it takes some size for the color to hold in a darker shade.