Yes, you can tell just by looking at it. Good pasta will have a unique yellow color. Properly grown, stored, milled, and dried, pasta will have very few defects such as black specks, white spots, or cracks. During cooking, the pasta will not clump together or form surface stickiness, and it should have good texture and elasticity upon chewing. Visually the pasta should be an amber yellow color, uniform in size and shape, and without grayish or reddish shades. Quality pasta will have a pleasant taste and aroma, and always cook al dente.