To recognize quality in the cut of a gemstone, there are several points to consider.
When choosing a sapphire or ruby, ensure that the gem doesn't display the bands of color common to corundum crystals, because if you can see these streaks, you can tell the gem was cut for maximum weight rather than beauty. The gemologists at Blue Nile review each gemstone in each piece of jewelry to ensure that the rubies and sapphires are cut to present consistent color.
	In a gemstone with more saturated color, the best cut may be more shallow than average, permitting more light to penetrate the gemstone, while in a less saturated gem, the color may benefit from a deeper cut.
Look at the gemstone in the setting and ensure that all the facets are symmetrical. An asymmetrically-cut crown indicates a gemstone of low-quality. In all cases, a well-cut gemstone is symmetrical and reflects light evenly across the surface, and the polish is smooth, without any nicks or scratches. These are the characteristics that Blue Nile jewelers look for when selecting our gemstone jewelry.
	Like diamonds, fine quality color gems usually have a table, crown, girdle, pavilion, and culet.