Whether it can be developed depends on the grade of blue equipment. The items of Blue Ruler's Shield and Blue Archon's Armor must be at least 77, so it is possible to wash out the two magic stickers of "Jeweler's Bias" and "Jeweler's Stability". The elimination probability involves mathematical probability, and the elimination probability of different grades of goods is different. Roughly speaking, it is about one in ten thousand. In short, it is extremely unlikely. In the first scene of the difficulty of hell, Chas the blacksmith is even more hopeless. The magic sticker obtained by washing blue equipment is only related to the item level of blue equipment, and has nothing to do with the character level, game difficulty, gem type and so on. So there is no requirement for the level of characters. Wash 20 health+mana amulets. It is recommended that the level of items be greater than or equal to 94, such as small amulets dropped by Diablo (94), NiLassek (95) and Barr (99).