How to judge shirt buttons?

Do not overlook the buttons! Plastic buttons bring you nothing but cheap outlook. Among many materials which can be used for shirt buttons, trochus and white butterfly shells are the most favorable choices for good shirts. The former owns a gentle yellow color with some wire drawings. The latter enjoys a gorgeous white color with cloud patterns. Besides, when used for making buttons, white butterfly shells have a higher waste rate than trochus, thus it is more expensive. In order to pursue white and gloss outlook, advanced shirts prefer white butterfly shell or mother-of-pearl buttons.