Can be repaired. According to Jiuyu.com's inquiry, the sapphire bump can be polished and repaired again. The best way to hit a sapphire is to polish it again. The re-polished sapphire is as bright as new, but it will cause the loss of sapphire weight. If there is only a slight scratch, it will not affect the beauty of sapphire and can be ignored. Only a few serious scratches will suggest re-grinding.