The defects of SI 1 are generally invisible to the naked eye. Of course, if you are a professional engaged in diamond identification and sales, you may be sharp-eyed. Besides, who will study hard with this drill at ordinary times? There is no one but myself. By the way, did you buy this diamond? If not, it is recommended to replace it. The color is too good, but the definition is too poor. It goes to two extremes. Although color is more important than clarity, so is this diamond. .....