RE: Crystal reflections: why a dark patch is not a coating test · RWI-19438

Limit of the answer in “Crystal reflections: why a dark patch is not a coating test”: “Compare multiple controlled angles and describe the visible observation without asserting…” is an excerpt from the discussion, not an independent verification. A reader needs the relevant original material before treating an interpretation as established. Review focus: scope. Keep the stated question separate from any broader claim.