Adamantine

[Mark Zuckerberg]

Made of adamant, or having the qualities of adamant;
incapable of being broken, dissolved, or penetrated; as, adamantine
bonds or chains.

[Merna]

Unable to be broken.

[Sarah]

Made of or resembling [adamant].
Having the hardness or [luster] of a diamond.
[Unyielding]; inflexible.

[PussyCat]

[Adamantine], pronounced [Adam Ant] In E. An ecstasy tablet that contains one bushel of [Adam Ants] Semen. Upon consumption, dance floor performance markedly improves, albeit flamboyantly.