In literature, "sable" functions both as a technical heraldic term and as a rich, evocative descriptor for darkness. In the realm of heraldry, it precisely denotes a black field on a shield or in a crest—as seen in detailed armorial descriptions ([1], [2], [3])—where its use creates a vivid, formal image of lineage and tradition. Beyond its heraldic precision, "sable" is employed poetically to evoke moods of gloom, mystery, or melancholy; authors use it to describe not only dark skies and ominous clouds ([4], [5], [6]) but also to lend a somber elegance to figures and settings, from the subtle touch of a pencil ([7]) to the brooding scowls of characters ([8]). This dual usage enhances literary expression by bridging technical description with layered symbolism.