The term adamantine in literature is employed to evoke a sense of indestructible strength and determination both in physical objects and abstract human qualities. Writers invoke it to describe unyielding materials—as seen in descriptions of iron-like breastplates or celestial vaults [1, 2, 3]—while equally using it to illustrate resolute convictions and unshakeable principles [4, 5, 6]. This versatility extends to portrayals of rigid bonds in relationships or societal structures [7, 8] and even to characterize the celestial and mythical, from the unbreakable chains of fate to the steadfast spheres in the heavens [9, 10]. Ultimately, adamantine serves as a powerful metaphor for all that is enduring, unbending, and eternal across various literary contexts.