Solve a batch problem

START WITH THE SYMPTOM

Choose the evidence before the remedy

A product is not the first diagnosis. Inspect a clean, dry stone in good light and compare it with an unfinished piece from the same batch. If the surface is evenly dull, begin with the not-shiny diagnosis. A removable film or haze belongs in the cloudy-rock inspection. Fresh crescents, chips, or impact marks point to the bruising and chipping guide. A leaking barrel, stopped motion, slipping, or unusual heat belongs in machine maintenance.

Record where the defect first appeared, which stones share it, the exact stage materials, the load, and any machine change. Hold damaged or uncertain stones out of the next load until the cause is narrower. Do not add polish simply because the finish is poor; residue, missed shaping, contamination, incompatible material, impact damage, and equipment faults call for different next steps.