I really should start with an apology for poor searching skills if relevant; I cannot imagine this was not raised before.
Notably the more 'exotic' type of cable often has a, what I can best call, cosmetic ring somewhere round it. This may be say twice the cable diameter, some 15mm long, of any shape/material, with all manner of artisctic engravings and claims - we know the story.
Has anybody ever been adventurous/affluent/wreckless enough to dismantle this to reveal the mystery and record the sacrifice on photo?