-Faulty imprints. -The solder d

   -Faulty imprints.
-The solder didn’t melt – the solder as well as the substance were not heated up sufficiently.
-Too large an amount of molten solder – caused by repeated soldering or by using an unsuitable solder.
-Stones flooded by the molten solder – caused by the girdler’s inattention, usually heating up the joint for too long.
-Yellow or cracked stones – caused by overheating the stones for an excessively long time.