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Not all semi-facet rough is created equal. Some semi-facet has larger, but relatively few significant feathers that need to be oriented, as much as possible, perpendicular to the table and other semi-facet material has a diffused web of small inclusion that are impossible to do much with accept cut the biggest stone you can get. I have had success with both types of materials as long as the clarity/crystal quality is good between the feathers and web of inclusions.
This medium pastel aquamarine blue was never meant to be clean. It formed a part of a bicolor crystal from Afghanistan that easily camel apart. The inclusions are clearly visible, but the stone still has merit. This is because the clean part of the stone has good crystal, which is typical of Afghanistan material. It also doesn’t hurt that the color is light and fresh without dichroism. It weighs 1.46 carats.